RikoteMaster/aqua-rat-mcqa huggingface dataset:
Question: Sujit incurred a loss of 45% on selling an article for Rs.3630/-. What was the cost price of the article?
A.Rs.5725/-
B.Rs.6600/-
C.Rs.6250/-
D.Rs.6750/-
Answer: B.Rs.6600/-
Explanation: Explanation:
45% loss means SP of Rs.3630/- is 55% of CP
:. CP = 3630x100/55 = Rs.6600/-
Answer: Option B
Question: AF + CD = AAA, where AF and CD are two-digit numbers and AAA is a three digit number; A, F, C, and D are distinct positive integers. In the addition problem above, what is the value of C?
A. 1
B. 3
C. 7
D. 9
Answer: D. 9
Explanation: Since AF and CD are two-digit integers, their sum can give us only one three digit integer of a kind of AAA: 111.
So, A=1 and we have 1F+CD=111
Now, C can not be less than 9, because no two-digit integer with first digit 1 (1F<20) can be added to two-digit integer less than 90, so that to have the sum 111 (if CD<90, so if C<9, CD+1F<111).
Hence C=9.
Answer: D.
Question: In an effort to plan out expenses, the Roberts family is representing its annual budget as a circle graph. Each sector of the graph is proportional to the amount of the budget it represents. If “clothes and shoes” takes up 45° of the chart, how much of the Roberts’s $20,000 annual budget is dedicated to clothes and shoes?
A.$2,500
B.$3,000
C.$4,500
D.$5,000
Answer: A.$2,500
Explanation: Given for clothes and shoes” takes up 45° of the circular chart.
Then clothes and shoes = 45/360 * 20000.
=> 2500.
IMO option A is correct answer...
Question: In what time will a train 300 meters long cross an electric pole, if its speed is 90 km/hr
A.5 seconds
B.12 seconds
C.3 seconds
D.2.5 seconds
Answer: B.12 seconds
Explanation: Explanation:
First convert speed into m/sec
Speed = 90*(5/18) = 25 m/sec
Time = Distance/speed
= 300/25 = 12 seconds
Answer: B
Question: A river 3m deep and 55 m wide is flowing at the rate of 1 kmph the amount of water that runs into the sea per minute is?
A.2338.9
B.2748.9
C.2148.9
D.2745.9
Answer: B.2748.9
Explanation: Rate of water flow-1kmph--1000/60--16.66 m/min
depth of river--3m
width of river--55m
vol of water per min--16.66 *3*55---2748.9
Answer B
Question: For a light that has an intensity of 60 candles at its source, the intensity in candles, S, of the light at a point d d feet from the source is given by the formula S=60k/d^2 60, where k is a constant. If the intensity of the light is 30 candles at a distance of 2 feet from the source, what is the intensity of the light at a distance of 10 feet from the source?
A.3/10 candles
B.1/2 candles
C.1 1/3 candles
D.6/5 candles
Answer: D.6/5 candles
Explanation: ANS = 3/10
S= 60k/d^2
At 2 feet
30 = 60k/4 so k = 2
At 10 feet
S = 60 *2/10^2 = 6/5
D
Question: A mixture of 70 litres of milk and water contains 10% water. How many litres of water should be added to the mixture so that the mixture contains 12 1/2% water?
A.17
B.22
C.58
D.2
Answer: D.2
Explanation: Explanation:
Quantity of milk in the mixture = 90/100 (70) = 63 litres.
After adding water, milk would form 87 1/2% of the mixture.
Hence, if quantity of mixture after adding x liters of water, (87 1/2) / 100 x = 63 => x = 72
Hence 72 - 70 = 2 litres of water must be added
Answer:D
Question: Maxwell leaves his home and walks toward Brad's house. One hour later, Brad leaves his home and runs toward Maxwell's house. If the distance between their homes is 34 kilometers, Maxwell's walking speed is 4 km/h, and Brad's running speed is 6 km/h. What is the total time it takes Maxwell before he meets up with Brad?
A.3
B.4
C.5
D.6
Answer: B.4
Explanation: Total Distance = 34 kms
Maxwell Speed = 4 kms/hr
Maxwell travelled for 1hour before Brad started , therefore Maxwell traveled for 4 kms in 1 hour.
Time taken = Total Distance / Relative Speed
Total Distance after Brad started = 30 kms
Relative Speed (Opposite side) (As they are moving towards each other speed would be added ) = 6+ 4 = 10 kms/hr
Time taken to meet Brad after Brad Started = 30 / 10 = 3 hrs
Distance traveled by Maxwell = Maxwell's speed * time taken = 4 * 3 = 12+4 = 16 kms...
Therefore Total Time taken by Maxwell to meet Brad = Distance travelled by Maxwell / Maxwell's Speed = 16 /4 = 4 hrs ... Answer B
Question: If (1+a)y=y, which of the following must be true?
A.a=-1 or y=0
B.a=0 or y=0
C.a=1 or y=1
D.a=-1 or y=-1
Answer: B.a=0 or y=0
Explanation: We have (1+a)y=y.
If a=0, y=y. True
If y=0, (1+a)*0=0 True
So, B will be the answer.
Question: The area of a parallelogram is 128sq m and its altitude is twice the corresponding base. Then the length of the base is?
A.8
B.9
C.6
D.4
Answer: A.8
Explanation: 2x * x = 128 => x
= 8
Answer: A
Question: What will come in place of the x in the following Number series? 75, 225, x, 2025, 6075
A.675
B.752
C.300
D.400
Answer: A.675
Explanation: (A)
25 x 3 = 75, 75 x 3 = 225 , 225 x 3 = 675, 1675 x 4 = 2025.
Question: Graph G has a line of symmetry of x = –5/2. Graph G passes through the point (2, 2). What is the x-coordinate of another point that must have a y-coordinate of 2?
A. –8
B. –7
C. –5
D. –4
Answer: B. –7
Explanation: Line of symmetry is X=-2.5; one point is (2,2)
Right side distance =2.5+2(distance from origin) = 4.5; therefore Left side distance should be same from line of symmetry =4.5;
therefore left side co-ordinate=4.5+ 2.5(distance from origin) =7; as the X coordinate is in 2nd quadrant hence -7
Therefore answer is B
Question: There are 30 socks in a bag. 30% is in blue color. What is the probability to take two blue socks?
A.11/145
B.12/145
C.13/145
D.14/145
Answer: B.12/145
Explanation: out of 30% 30 socks are blue => out of 30 9 socks are blue in color.
probability of selecting two blue socks out of 9 socks is 9C2.
so the required answer is :
(probability of selecting two blue socks out of 9 socks) /(Probability of selecting 2 socks out of 30 socks)
=> (9C2) / (30C2)
=> 36 / 435
=> 12/145
ANSWER:B
Question: A merchant sells an item at a 20% discount, but still makes a gross profit of 20 percent of the cost. What percent R of the cost would the gross profit on the item have been if it had been sold without the discount?
A.20%
B.40%
C.50%
D.60%
Answer: C.50%
Explanation: Let the Market Price of the product is MP.
Let the Original Cost Price of the product is CP.
Selling Price (Discounted Price) = 100%of MP - 20%MP
= 80% of MP. ---------------- (1)
Profit made by selling at discounted price = 20% of CP -------------- (2)
Apply the formula:
Profit R= Selling Price - Original Cost Price
=> 20% of CP = 80% of MP - 100% CP
=> MP = 120CP/80 = 3/2 (CP)
Now if Product is sold without any discount, then,
Profit = Selling Price (without discount) - Original Cost Price
= Market Price - Original Cost Price
= MP - CP
= 3/2 CP - CP
= 1/2 CP
=50%of CP
Thus, Answer should beC.
Question: One train is traveling 54 kmph and other is at 10 meters a second. Ratio of the speed of the two trains is?
A.5:4
B.3:2
C.5:0
D.5:4
Answer: B.3:2
Explanation: 54 * 5/18 = 10
15:10 => 3:2
Answer: B
Question: How many ways are there to award a gold, silver and bronze medal to 14 contending teams?
A.14 x 13 x 12
B.10!/(3!7!)
C.10!/3!
D.360
Answer: A.14 x 13 x 12
Explanation: we clearly know that there can be only one winning team which deserves the gold medal. we can do the selection in 14 ways
if gold medal is given to 1 of the teams then only possible 13 teams can be considered for silver medal. we can do selection in 13 ways
similarly if gold and silver medals are awarded then only remaining 12 teams can be considered for a bronze medal. we can do the selection in 12 ways
Total number of ways to select the 3 possible medal winners = 14 * 13 * 12
Correct answer - A
Question: The length, breadth and height of a room are in the ratio 3:2:1. If the breadth and height are halved, while the length is doubled. Then the total area of the 4 walls of the room will be decreased by
A.33
B.30
C.88
D.22
Answer: B.30
Explanation: Given l:b:h=3:2:1
let h=10, b = 20, and l = 30
area = 2(l+b)h2(l+b)h
area= 2*(3x+2x)*x = 2(30+20)10=10002(30+20)10=1000
Now after those adjustments in the measurements,
l=60, b=10, h=5
area= 2(l+b)h2(l+b)h = 2(60+10)5=7002(60+10)5=700
Percentage decrease= 1000−7001000×1000=30%
Answer:B
Question: In a recent election, Geoff received 0.5 percent of the 5,000 votes cast. To win the election, a candidate needed to receive more than x% of the vote. If Geoff needed exactly 2,571 more votes to win the election, what is the value of x ?
A. 50
B. 54
C. 52
D. 60
Answer: C. 52
Explanation: Word problems are tricky in somehow more than other problem because you have the additional step to translate.
Breaking the problem: Geoff how many votes he receives ?? 25 votes
he needs 2571 more votes so : 25+2571= 2596
Now what's the problem wants ?? a x %........2596 is what % of total votes 5000........translating: 2596 = x/100 * 5000 ---
x= 52 %..........C
Question: A thief goes away with a SANTRO car at a speed of 40 kmph. The theft has been discovered after half an hour and the owner sets off in a bike at 45 kmph when will the owner over take the thief from the start?
A.A)2
B.B)5
C.C)7
D.D)4
Answer: D.D)4
Explanation: Explanation:
|-----------20--------------------|
45 40
D = 20
RS = 45– 40 = 5
T = 20/5 = 4 hours
Answer: Option D
Question: Jenna rode her bike to school at 5 kph, but rode home at 15 kph. What was her average speed traveling to and from school?
A.5 kph
B.7 kph
C.10 kph
D.13 kph
Answer: C.10 kph
Explanation: (5 kph +15 kph)/2 =10 kph
Correct answer is: C
Question: If x = 1- 3t and y = 2t - 3, then for what value of t does x = y?
A. 5/2
B. 3/2
C. 4/5
D. 2/5
Answer: C. 4/5
Explanation: We are given x = 1 – 3t and y = 2t – 3, and we need to determine the value for t when x = y. We should notice that both x and y are already in terms of t. Thus, we can substitute 1 – 3t for x and 2t – 3 for y in the equation x = y. This gives us:
1 – 3t = 2t – 3
4 = 5t
4/5 = t
The answer is C.
Question: Bhanu spends 30% of his income on petrol on scooter 10% of the remaining on house rent and the balance on food. If he spends Rs.300 on petrol then what is the expenditure on house rent?
A.2287
B.70
C.128
D.797
Answer: B.70
Explanation: Given 30% (Income ) = 300 ⇒⇒ Income = 1000
After having spent Rs.300 on petrol, he left with Rs.700.
His spending on house rent = 10% (700) = Rs.70
Answer:B
Question: A letter lock consists of three rings each marked with nine different letters. The number of distinct unsuccessful attempts to open the lock is at the most?
A.277
B.269
C.728
D.768
Answer: C.728
Explanation: Since each ring consists of nine different letters, the total number of attempts possible with the three rings is
= 9 * 9 * 9 = 729. Of these attempts, one of them is a successful attempt.
Maximum number of unsuccessful attempts = 729 - 1
= 728
Answer:C
Question: he population of a city is 150,000. If it increases at the rate of 6% per annum, then what will be its population 2 years hence?
A.1697787
B.1697723
C.168540
D.169728
Answer: C.168540
Explanation: Population after n years = P [1 + (R/100)]2
Population after 2 years = 150000 * [1 + 6/100]2 = (150000 x 53/50 x 53/50) = 168540
ANSWER: C
Question: The sum of ages of 5 children born at the intervals of 3 years each is
50 years. Find out the age of the youngest child?
A.6 years
B.5 years
C.4 years
D.3 years
Answer: C.4 years
Explanation: let the age of young child is = x
then age of 5 children can be written as x,(x+3),(x+6),(x+9) and (x+12)
x+(x+3)+(x+6)+(x+9)+(x+12)=50
5x+30 = 50 -> x =4
ANSWER C
Question: A paper is in a square form whose one side is 20 cm. Two semi circles are drawn on its opposites as diameters. If these semi circles are cut down what is the area of the remaining paper?
A.(400 - 100π) cm2
B.(400 - 2π) cm2
C.(400 – 200π) cm2
D.200π cm2
Answer: A.(400 - 100π) cm2
Explanation: Explanation:
20
400-π*10*10
=>400-100π
ANSWER IS A
Question: A gardener wants to plant trees in his garden in such a way that the number of trees in each row should be the same. If there are 4 rows or 5 rows or 6 rows, then no tree will be left. Find the least number of trees required.
A.30
B.60
C.120
D.240
Answer: B.60
Explanation: The least number of trees that are required = LCM(4, 5, 6) = 60.
ANSWER:B
Question: A and B complete a job in 6 days. A alone can do the job in 15 days. If B works alone, how many days will it take to complete the job?
A.8
B.10
C.12
D.14
Answer: B.10
Explanation: The rate of A and B is 1/6
A's rate is 1/15
B's rate is 1/6 - 1/15 = 1/10
B can complete the job in 10 days.
The answer is B.
Question: In how many a committee of 5 members can be selected from 6men
5 ladies consisting of 3 men and 2 ladies
A.200
B.300
C.400
D.500
Answer: A.200
Explanation: (3 men out of 6) and (2 ladies out of 5) are to be chosen
Required number of ways
=(6C3 * 5C2)
= 200
ANSWER A
Question: If the speed of X meters per minute is equivalent to the speed of Y kilometers per hour, what is Y in terms of X? (1 kilometer=1000 meters)
A.15x/18
B.6x/5
C.18x/5
D.6/100x
Answer: D.6/100x
Explanation: If the speed of X meters per minute is equivalent to the speed of Y kilometers per hour, what is Y in terms of X? (1 kilometer=1000 meters)
We need to find an equation with x in the answer...
convert all measurements so they are alike (i.e. convert km to m, minutes to hours, etc)
Speed = x/t
x meters/second
(60) x meters/hour
Speed = y/t
y KM/hour
Speed = y(1000m)/hour
y(1000meters)/hour = (60) x meters/hour
y(1000)/1hour = x(60) / 1 hour
y(1000) = x(60)
y = 0.06x
Answer: D. 6/100x
Question: The HCF of three numbers is 23. If they are in the ratio of 1 : 2 : 3, then find the numbers ?
A.69, 15, 22
B.23, 46, 69
C.25, 31, 41
D.23, 21, 35
Answer: B.23, 46, 69
Explanation: Let the numbers are N, 2N and 3N.
Where, N = HCF
Given that, N = 23
The numbers are 23, 46 and 69.
Answer :B
Question: The G.C.D. of 1.08, 0.34 and 0.9 is:
A.0.02
B.0.9
C.0.18
D.0.108
Answer: A.0.02
Explanation: EXPLANATION
Given numbers are 1.08, 0.34 and 0.90. H.C.F. of 108, 34 and 90 is 2,
H.C.F. of given numbers = 0.02.
Answer A
Question: 100, 144, 196, 256, 324, ?, F ind the missing number(?).
A.444
B.450
C.100
D.400
Answer: D.400
Explanation: The series consists of squares of consecutive EVEN numbers.
Answer : D.
Question: A baseball player signs a new contract that includes a guaranteed 10 percent increase in salary over his old contract, plus a performance bonus of up to $500. If he earns the maximum possible performance bonus, his new salary including bonus will be equivalent to a 12 percent increase over his old salary. Assuming he earns the full bonus, what will his total new salary be, in dollars?
A.24,500
B.25,000
C.27,500
D.28,000
Answer: D.28,000
Explanation: Original salary = X.
(Wanted) New salary = 1,12X.
500=0,02X.
X=25,000.
1,12*25,000=28,000.
Answer is D.
Question: 45 men working 8 hours per day dig 30 m deep. How many extra men should be put to dig to a depth of 50 m working 6 hours per day?
A.33
B.77
C.299
D.55
Answer: D.55
Explanation: (45 * 8)/30 = (x * 6)/50 => x =100
100 – 45 = 55
Answer: D
Question: A bag contains five white and four red balls. Two balls are picked at random from the bag. What is the probability that they both are different color?
A.20/86
B.20/36
C.20/38
D.20/31
Answer: B.20/36
Explanation: Two balls can be picked from nine balls in ⁹C₂ ways.
We select one white ball and one red ball from five white balls and four red balls. This can be done ⁵C₁ . ⁴C₁ ways.
The required probability = (5 * 4)/⁹C₂ = 20/36
= 5/9
Answer: B
Question: ratio and addition of time on principal amount 500 with two different rate are 3:5 and 16
respectively.given rates are 2% and 3% respectively.what will be simple interest on both case?
A.30,50
B.100,150
C.80,150
D.60,150
Answer: D.60,150
Explanation: let the ratio constant be x.
3x+5x=16,8x=16,x=2
t1=6,t2=10
s.i1=500*2*6/100=60
s.i2=500*3*10/100=150
answer D
Question: In a certain lottery drawing, two balls are selected at random from a container with 200 balls, numbered from 1 to 200, inclusive. If the winner of the lottery is awarded a cash prize in the amount of $1,000 times the product of the numbers on the two selected balls, which of the following is a possible amount of the cash prize given to the winner?
A.$9.85 x 10^6
B.$9.90 x 10^6
C.$3.98 x 10^7
D.$1.05 x 10^7
Answer: C.$3.98 x 10^7
Explanation: The max product of any two balls can be 199 * 200 = 3.98*10^4
If you multiply it by $1000 the max amount will be 3.98 * 10^7. .
Answer: C
Question: What is the remainder when 1201 × 1202 ×1205 × 1210 is divided by 6?
A.1
B.2
C.3
D.4
Answer: D.4
Explanation: The remainders when dividing each number by six are: 1, 2, 5, and 4.
The product is 1*2*5*4 = 40
The remainder when dividing 40 by 6 is 4.
The answer is D.
Question: A person can swim in still water at 12 km/h. If the speed of water 6 km/h, how many hours will the man take to swim back against the current for 6km?
A.3
B.4
C.5
D.6
Answer: D.6
Explanation: M = 12
S = 6
US = 12 - 6 = 6
D = 36
T = 36/6 = 6 Answer:D
Question: Mangala completes a piece of work in 15 days, Raju completes the same work in 45 days. If both of them work together, then the number of days required to complete the work is
A.6 days
B.7 days
C.8 days
D.9 days
Answer: D.9 days
Explanation: If A can complete a work in x days and B can complete the same work in y days, then, both
of them together can complete the work in x y/ x+ y days.
That is, the required No. of days = 15 Ã— 45/60 = 11 days.
D
Question: During one month at a particular restaurant, 1/4 of the burgers sold were veggie burgers and 1/4 of the rest of the burgers sold were double-meat. If x of the burgers sold were double-meat, how many were veggie burgers?
A.x/8
B.x/2
C.3x/3
D.3x/4
Answer: C.3x/3
Explanation: Let y be the number of total burgers.
veggie = y/4 , non veggie = 3y/4
1/4 of the rest of the burgers sold were double-meat
=> 3y/4 * 1/4 = double meat = x
=> y/4 = 4x/3 = veggie
Hence C
Question: If a continuous cable 10 meters long was marked off at intervals of 1/3 meter and also 1/8 meter, and then if the cable were cut at each mark, how many different size length of cable would result?
A.1
B.2
C.3
D.4
Answer: C.3
Explanation: In this particular example length (10 meter) is just extraneous information.
The location of the marks for 1/3 meter would be 8/24, 16/24, 24/24, etc...
The location of the marks for 1/8 meter would be 3/24, 6/24, 9/24, 12/24, 15/24, 18/24, 21/24, 24/24, etc...
The distances between marks are 3/24, 2/24, and 1/24.
The answer is C.
Question: Selling an kite for Rs. 30, a shop keeper gains 25%. During a clearance sale, the shopkeeper allows a discount of 10% on the marked price. His gain percent during the sale is?
A.8%
B.10%
C.11%
D.12.5%
Answer: D.12.5%
Explanation: Explanation:
Marked price = Rs. 30
C.P. = 100/125 * 30 = Rs. 24
Sale price = 90% of Rs. 30 = Rs. 27
Required gain % = 3/24 * 100 = 12.5%.
Answer: D
Question: A grocer has a sale of Rs. 5420, Rs. 5660, Rs. 6200, Rs. 6350 and Rs. 6500 for 5 consecutive months. Find the sale he should have in the sixth month, so that he gets an average sale of Rs. 6200?
A.Rs. 7070
B.Rs. 5991
C.Rs. 6020
D.Rs. 6850
Answer: A.Rs. 7070
Explanation: Explanation:
Total sale for 5 months = Rs. (5420 + 5660 + 6200 + 6350 + 6500) = Rs. 30,130
Therefore, required sale = Rs. [(6200 * 6) – 30,130] = Rs. (37200 – 30,130) = Rs. 7070
ANSWER A
Question: The simple interest on a sum of money will be Rs.900 after 10 years. If the principal is trebled after 5 years what will be the total interest at the end of the tenth year?
A.1800
B.2888
C.1200
D.2699
Answer: A.1800
Explanation: P --- 10 ---- 900
P --- 5 ----- 450
3P --- 5 ----- 1350
------
=> 1800
Answer: A
Question: What will $2500 amount to in three years if it is invested at 20% per year compound interest, with the interest being compounded annually?
A.$3760
B.$3980
C.$4210
D.$4320
Answer: D.$4320
Explanation: After one year: 1.2 * $2500
After two years: (1.2)^2 * $2500
After three years: (1.2)^3 * $2500 = $4320
The answer is D.
Question: A boat can travel 2.5 times the distance down the stream than up the stream in the same time. If the speed of the current is 3 KMPH, Find the speed of the boat in still water
A.7
B.10
C.15
D.20
Answer: A.7
Explanation: Simple question, messy language.
Lets say boat's speed is B and current's speed is C.
Upstream speed : B - C
Downstream speed : B + C
Distance will be the same both times. lets say D.
given : time it takes upstream = 2.5 times time it takes downstream
D/(B + C) = 2.5 * [D/(B - C)]
Solving B = 2.3 C
given : C is 3 KMPH
So B is 6.9~=7 KMPH
A
Question: A and B complete a job in 6 days. A alone can do the job in 18 days. If B works alone, how many days will it take to complete the job?
A.8
B.9
C.10
D.11
Answer: B.9
Explanation: The rate of A and B is 1/6
A's rate is 1/18
B's rate is 1/6 - 1/18 = 1/9
B can complete the job in 9 days.
The answer is B.
Question: Mary and Harry enter into a partnership by investing $700 and $300 respectively. At the end of one year, they divided their profits such that a third of the profit is divided equally for the efforts they have put into the business and the remaining amount of profit is divided in the ratio of the investments they made in the business. If Mary received $800 more than Harry did, what was the profit made by their business in that year?
A.45645433
B.46457457
C.4675
D.3000
Answer: D.3000
Explanation: Say the profit was $x.
Mary's share = x/6 (half of the third) + (x-x/3)*0.7
Harry share = x/6 (half of the third) + (x-x/3)*0.3
Thus (x-x/3)*0.7-(x-x/3)*0.3=800 --> x=3000.
answer is D
Question: What is the lowest possible common multiple of 2 distinct integers, each greater than 62?
A.68
B.69
C.126
D.68^2
Answer: C.126
Explanation: In order to get the lowest LCM, we have to take the first number as 63 and the next number as its multiple.
So, I can take 63 and 126 as two distinct numbers, such that Lowest LCM = 126.
Answer should be C.
Question: If KING is coded as 17 and MASS is coded as 29 Then DON is coded as
A.21
B.20
C.19
D.18
Answer: D.18
Explanation: KING = 11+9+14+7=41 i.e (4*4)+(1*1)=17
MASS = 13+1+19+19=52 i.e (5*5)+(2*2)=29
DON = 4+14+15=33 i.e(3*3)+(3*3)=18
ANSWER:D
Question: The difference between the simple interest received from two different sources on Rs. 1500 for 3 years is Rs. 12.50. The difference between their rates of interest is?
A.A)2.4%
B.B)2.6%
C.C)0.3%
D.D)2.0%
Answer: C.C)0.3%
Explanation: (1500 * R1 * 3)/100 - (1500 * R2 * 3)/100 = 12.50 4500(R1 - R2) = 1250
R1 - R2 = 0.3%
Answer:C
Question: If 3 cm of a pencil is purple, 2 cm of the remaining is black and the remaining 1 cm is blue, what is the total length of the pencil?
A.6
B.3
C.1
D.4
Answer: A.6
Explanation: Answer is A) 6
Question: A man purchased a cow for Rs. 3000 and sold it the same day for Rs. 3600, allowing the buyer a credit of 2 years. If the rate of interest be 10% per annum, then the man has a gain of:
A.0
B.9
C.8
D.7
Answer: A.0
Explanation: Explanation:
C.P =Rs.3000
S.P =\inline {\color{Black}Rs.[\frac{3600\times 100}{100+(10\times 2)}]=Rs.3000}
Gain =0%
Answer: A) 0%
Question: When Raja was born, his father was 32 years older than his brother and his mother was 25 years older than his sister. If Raja’s brother is 6 years older than Raja and his mother is 3 years younger than his father, how old was Raja’s sister when Raja was born?
A.10
B.99
C.76
D.28
Answer: A.10
Explanation: Explanation:
Raja's brother 6 year old when Raja was born.
His father's age = 32 + 6 = 38 year
His mother's age = 35 year
His sister age =35 – 25 = 10 years
Answer: A
Question: Samant bought a microwave oven and paid 10 % less than the original price. He sold it with 30% profit on the price he had paid.What percentage of profit did samant earn on the original price?
A.17%
B.20%
C.27%
D.32%
Answer: A.17%
Explanation: Solution
Let the original price	=Rs.100.
Then, C.P	= Rs.90.
S.P =130% of Rs. 90	=Rs.(130/100×90)
= Rs.117.
Required percentage	= (117 - 100)%
=17%.
Answer A
Question: What is the least number of square tiles required to pave the floor of a room 12 m 12 cm long and 1m 20 cm broad?
A.1010
B.804
C.814
D.844
Answer: A.1010
Explanation: Solution
Length of largest tile = H.C.F. of 1212cm & 120cm = 12cm.
Area of each tile = (12 x 12)cm2
∴ Required number of tiles	= [1212x120/12x12]
= 1010.
Answer A
Question: Find the value for x from below equation: x/3=-2?
A.-6
B.-5
C.-4
D.-3
Answer: A.-6
Explanation: 1. Multiply both sides by 3:
x*3/3= -2/3
2. Simplify both sides:
x = -6
A