RikoteMaster/aqua-rat-mcqa huggingface dataset:
Question: On the x-y coordinate plane there is a parabola, y=x(4-x). Which of the following points is in the region that is enclosed by this parabola and the x-axis?
I. (1, 2) II. (2, 5) III. (3, 2)
A.I only
B.II only
C.III only
D.I and III
Answer: D.I and III
Explanation: Since co-efficient of x^2 is negative, the parabola will be downward facing. So the parabola and the x axis will enclose some points where the y-values of the parabola are positive.
When x = 1, y = 3 lies on the parabola, so (1, 2) will be enclosed by the parabola and x axis.
When x = 2, y = 4 lies on the parabola, so (2, 5) will not be enclosed by the parabola and x axis.
When x = 3, y = 3 lies on the parabola, so (3, 2) will be enclosed by the parabola and x axis.
The answer is D.
Question: If n is the product of integers from 1 to 20 inclusive what is the greatest integer k for which 2^k is a factor of n?
.
A.10
B.12
C.15
D.18
Answer: D.18
Explanation: 20! = 1*2*3*4*5...*19*20 (This is 20 factorial written as 20!)
n = 1*2*3*4*5*6*7.....*19*20
How many 2s are there in n?
One 2 from 2
Two 2s from 4
One two from 6
Three 2s from 8
and so on...
When you count them all, you get 18.
ANSWER:D
Question: The sum of the ages of 4 children is 52 years. The age of the youngest child is 4. If the intervals of years each born is same find the interval?
A.4
B.8
C.10
D.6
Answer: D.6
Explanation: Explanation:
Let the interval is x .The youngest child's age is 4. Each of the other 3 children will then be 4+x, 4+2x, 4+3x
We know that the sum of their ages is 52 .
so, 4+(4+x)+(4+2x)+(4+3x) = 52
x= 6
Answer: D
Question: In a 500 m race, the ratio of the speeds of two contestants A and B is 3 : 4. A has a start of 140 m. Then, A wins by:
A.20 m
B.10 m
C.40 m
D.30 m
Answer: A.20 m
Explanation: To reach the winning point , A will have to cover a distance of 500 - 140= 360 metre
ratio of the speeds of two contestants A and B is 3 : 4
i.e., when A covers 3 metre, B covers 4 metre.
When A covers 360 metre, B covers 4/3×360 = 480 metre.
Remaining distance B have to cover = 500-480= 20 metre
A wins by 20 metre
Answer isA
Question: In what time will a train 100 meters long cross an electric pole, if its speed is 72 km/hr
A.5 seconds
B.2.8 seconds
C.3.5 seconds
D.2.5 seconds
Answer: A.5 seconds
Explanation: First convert speed into m/sec
Speed = 72*(5/18) = 20 m/sec
Time = Distance/speed
= 100/20 = 5 seconds
Answer: A
Question: The weight of an iron bucket increases by 33.33% when filled with water to 50% of its capacity. Which of these may be 50% of the weight of the bucket when it is filled with water( assume the weight of bucket and its capacity in kg to be integers?
A.7 kg
B.6 kg
C.5 kg
D.8 kg
Answer: C.5 kg
Explanation: Say Iron = 6 kg EMPTY so filled with 50% water you have a 1/3*6 = 2 kg water weight. so adding the rest of the bucket with water will naturally increase it by another 2kg so you have 2+2+6 = 10 thus 50% of 10 = 5.
ANSWER:C
Question: The average (arithmetic mean) of 16 students first quiz scores in a difficult English class is 61.5. When one student dropped the class, the average of the remaining scores increased to 64.0. What is the quiz score of the student who dropped the class?
A.a) 10
B.b) 24
C.c) 40
D.d) 55
Answer: B.b) 24
Explanation: Total Score of 16 students is 16*61.50 = 984
Total Score of 15 students is 15*64 = 960
So, the score of the person who left is 24 ( 984 - 960 )
Answer will be (B)
Question: 18! is equal to which of the following?
A.6,402,373,705,728,125
B.6,402,373,705,728,216
C.6,402,373,705,728,624
D.6,402,373,705,728,000
Answer: D.6,402,373,705,728,000
Explanation: After 4!, the units digit of every factorial is 0.
5!=120
6!=720
etc...
The answer is D.
Question: A straight pipe 1 meter in length was marked off in halves and also in thirds. If the pipe was then cut into separate pieces at each of these markings, which of the following gives all the different lengths of the pieces, in fractions of a meter?
A. 1/6 and 1/3 only
B. 1/4 and 1/3 only
C. 1/6, 1/4, and 1/3
D. 1/12, 1/6 and 1/4
Answer: A. 1/6 and 1/3 only
Explanation: Generally fast way to solve such problem is writing the different marks in ascending/descending order with same denominator:
Here 4th : 0/4, 1/4, 2/4, 3/4, 4/4
and 3rd : 0/3, 1/3, 2/3, 3/3
Generally fast way to solve such problem is writing the different marks in ascending/descending order with same denominator:
Here 2th : 0/2, 1/2, 2/2
and 3rd : 0/3, 1/3, 2/3, 3/3
Now with understood common denominator 6 write the numbers : for 2th : 0,3,6 and for 3rd : 0,2,4,6
Now comine : 0,2,3,4,6
Now find the cut with denominator 6 (Substracrt adjacent terms : 1/3, 1/6, 1/6, 1/3 i.e. 1/3 and 1/6 after removing duplicates.
answer : A
Question: A shopkeeper sold an article for 500 after giving 10% discount on the labelled price and made 20% profit on the cost price. What would have been the percentage profit,had he not given the discount’?
A.33.33%
B.30%
C.23%
D.28%
Answer: A.33.33%
Explanation: Cost price =500×100/120= 416.67
S.P. at no discount = 500×100/90 = 555.55
∴ % profit = 138.88×100/416.67 = 33.33 %
Answer A
Question: Which of the following fractions is greater than 1/3 and less than 1/5?
1.1/3 2. 1/5 3. 1/2 4. 2/3 5. 4/5 6. 9/10
A.1/5
B.1/3
C.1/4
D.1/9
Answer: C.1/4
Explanation: 1/5 = 0.2, 1/3 = 0.33, 1/9= 0.11, 1/8= 0.125, 4/5= 0.8, 1/4= 0.25.
Clearly, 0.25 lies between 0.20 and 0.33.
Therefore, 1/4 Lies between 1/5 and 1/3.
Answer is C.
Question: When positive integer x is divided by positive integer y, the remainder is 9. If x/y = 96.25, what is the value of y?
A.96
B.75
C.36
D.25
Answer: C.36
Explanation: Guys, one more simple funda.
5/2= 2.5
now .5 x2 =1 is the remainder
25/4 = 6.25
now .25x4=1 is the remainder
32/5=6.4
now.4x5 = 2 is the remainder
given x/y = 96.25 and remainder is 9
So .25 X y = 9
hence y= 36
Ans C
Question: Which is the middle even number between 5 and 15?
A.5
B.10
C.25
D.30
Answer: B.10
Explanation: 5+x = 15-x
2 x = 10
X = 5
Now 5+x = 10
ANSWER:B
Question: Meera purchased two three items from a shop. Total price for three items is Rs.5200/- She have given Rs. 7000/- What is the balance amount meera got?
A.650
B.400
C.1350
D.1800
Answer: D.1800
Explanation: Total cost of Items : 5200/-
amount Paid : 7000/-
Balance receivable : 6000 - 7000= 1800/-
Answer is D
Question: The speed of a car is 90 km in the first hour and 60 km in the second hour. What is the average speed of the car?
A.25
B.75
C.27
D.25
Answer: B.75
Explanation: S = (90 + 60)/2
= 75 kmph
Answer: B
Question: What is the product of all the prime factors of 14?
A.13
B.12
C.14
D.11
Answer: C.14
Explanation: factors : 2,7
2*7 =14
Answer : C
Question: The G.C.D of 1.2, 0.36 and 0.9 is
A.0.19
B.0.1
C.0.06
D.0.11
Answer: C.0.06
Explanation: Explanation:
Given numbers are 1.2 , 0.36 and 0.90
H.C.F of 120, 36 and 90 is 6 [ because G.C.D is nothing but H.C.F]
therefore H.C.F of given numbers = 0.06
Answer: C)
Question: You collect pens. Suppose you start out with 25. Mike gives you another 22 pens. Since her father makes pens, Cindy decides to double your pens. Since you're nice, you give Sharon 19 pens. How many pens do you have at the end?
A.39
B.40
C.41
D.75
Answer: D.75
Explanation: Solution
Start with 25 pens.
Mike gives you 22 pens: 25 + 22 = 47 pens.
Cindy doubles the number of pens you have: 47 Ã— 2 = 94 pens.
Sharon takes 19 pens from you: 94 - 19 = 75 pens.
So you have 75 at the end.
Correct answer: D
Question: On a map, 1.5 inches represent 24 miles. How many miles approximately is the distance if you measured 47 centimeters assuming that 1-inch is 2.54 centimeters?
A.174.2
B.212
C.288.1
D.296
Answer: D.296
Explanation: 1.5 inch = 2.54*1.5 cm.
So, 2.54*1.5 represents 24 miles.
So for 47 cm.:
47/(2.54*1.5) = x / 24 ---> x = 24*47/(4.81) = 296
Answer will be D.
Question: The rear–most end of a 66 foot truck exits a 330 foot tunnel exactly 6 seconds after the front–most end of the truck entered the tunnel. If the truck traveled the entire tunnel at a uniform speed, what is the speed of the truck in miles per hour (1 mile = 5,280 feet)?
A.225
B.90
C.45
D.37.5
Answer: C.45
Explanation: total length will be 330+66=396
time=6 secs
speed=396/6=66 feet/sec
conversion to miles per hour=66*3600/5280=45.
Answer C
Question: What will be the reminder when (1234567890123456789)^24 is divided by 6561 ?
A.0
B.1
C.2
D.3
Answer: A.0
Explanation: The digital sum of number is
(1+2+3+4+5+6+7+8+9+0+1+2+3+4+5+6+7+8+9)=90=(9+0)=9
So it is divisible by 3 or 9
The given divisor 6561 = 9^4
So
9^24/9^4 Reminder is 0
ANSWER:A
Question: A bag contains 4 white marbles and 4 black marbles. If each of 4 girls and 4 boys randomly selects and keeps a marble, what is the probability that all of the girls select the same colored marble?
A.1/35
B.1/9
C.1/10
D.1/20
Answer: A.1/35
Explanation: first, total ways to select for all boys and girls, i.e 8!/(4!*4!) = 8*7*6*5*4*3*2*1/4*3*2*1*4*3*2*1=70
then there are one two way girls can have all same colors, either white or black.
The number of ways in which 4 girls can select 4 white balls = 4C4 = 1
The number of ways in which 4 girls can select 4 black balls = 4C4 = 1
Therefore, total favorable outcomes/total outcomes = 2/70= 1/35
A
Question: A 2000 liter tank, half-full of water is being filled from a pipe with a flow rate of 1 kiloliter every 2 minutes. At the same time, the tank is losing water from two drains at a rate of 1 kiloliter every 4 minutes and every 6 minutes. How many minutes does it take to fill the tank completely?
A.8
B.12
C.18
D.24
Answer: B.12
Explanation: In: we have: 1,000/2min = 500 litres per minute
Out: we have: 1,000/4 + 1,000/6
Then do: IN - OUT to figure out the net inflow per minute (you get 83.3). Then divide the total number of litres you need (1,000 by that net inflow to get the minutes) - 12 min. Answer B.
Question: Joe can clean the house in 4 hours. Cindy can clean the house in 3 hours. How many hours will it take for both of them working together to clean the house?
A.1
B.2 5/7
C.2 1/5
D.1 5/7
Answer: D.1 5/7
Explanation: Work hrs=AB/(A+B)= 12/7 =1 5/7
Answer is D
Question: The speed of a car is 145 km in the first hour and 60 km in the second hour. What is the average speed of the car?
A.89 kmph
B.92 kmph
C.75 kmph
D.102.5 kmph
Answer: D.102.5 kmph
Explanation: S = (145 + 60)/2 = 102.5 kmph
D
Question: In how many ways Chief Minister and Minister be elected from a team of 12 members?
A.128
B.130
C.132
D.143
Answer: C.132
Explanation: To do this, if captain is elected first, then we have 12 ways of doing this.
For election of vice-captain, we have only 11 ways left, coz 1 way is already consumed. (Situations like this is called dependent situation. One selection depends upon other selection.)
So, the ans is 12*11 = 132 ways.
C
Question: Two trains are moving in the same direction at 144 kmph and 72 kmph. The faster train crosses a man in the slower train in 19 seconds. Find the length of the faster train?
A.320
B.340
C.360
D.380
Answer: D.380
Explanation: Relative speed = (144 - 72) * 5/18 = 4 * 5
= 20 mps.
Distance covered in 19 sec
= 19 * 20
= 380 m.
The length of the faster train
= 380 m.
Answer:D
Question: Village A	Village B	Village C	Village D	Village E	Village F ;
Village A
Village B
Village C
Village D
Village E
Village F
In the table above, what is the least number of table entries that are needed to show the mileage between each Village and each of the other five Villages?
A.16
B.15
C.18
D.20
Answer: B.15
Explanation: Easy way to go about this problem is we have 6*6 = 36 enteries in table the least number of enteries would be (36 - 6) /2 since 6 enteries represent the distances between same points .
Alternatively this can be solved as combination problem.
Correct Answer B
Question: Myra drove at an average speed of 30 miles per hour for T hours and then at an average speed of 60 miles/hr for the next T hours. If she made no stops during the trip and reached her destination in 2T hours, what was her average speed in miles per hour for the entire trip?
A.The average speed is 40 miles per hour.
B.The average speed is 45 miles per hour.
C.The average speed is 48 miles per hour.
D.The average speed is 50 miles per hour.
Answer: B.The average speed is 45 miles per hour.
Explanation: Here, time for which Myra traveled at the two speeds is same.
Average Speed = (a + b)/2 = (30 + 60)/2 = 45 miles per hour
Answer (B)
Question: If a,b and c are consecutive positive integers and a>b>c. What can be the value of (a^2-b^2)(b^2-c^2)?
A.21
B.79
C.143
D.231
Answer: C.143
Explanation: Since a,b and c are consecutive positive integers and a>b>c, we can write them as (x + 1), x and (x - 1) respectively
(a^2-b^2)(b^2-c^2) can be simplified into (2x + 1)(2x - 1) = 4x^2 - 1
using the options to find the product,
only C. 143 satisfactorily gives us x as an integer
ANSWER:C
Question: The number N is 5,1H4, where H represents the ten's digit. If N is divisible by 9, what is the value of H?
A.1
B.3
C.8
D.7
Answer: C.8
Explanation: Integer is divisible by 9 - Sum of digits is divisible by 9
Answer: C
Question: A wheel that has 6 cogs is meshed with a larger wheel of 14 cogs. When the smaller wheel has made 21 revolutions, then the number of revolutions mad by the larger wheel is:
A.4
B.9
C.12
D.21
Answer: B.9
Explanation: More cogs less revolution,..
so
6:14::x:21
(21*6)/14=9
ANSWER:B
Question: A certain bus driver is paid a regular rate of $20 per hour for any number of hours that does not exceed 40 hours per week. For any overtime hours worked in excess of 40 hours per week, the bus driver is paid a rate that is 75% higher than his regular rate. If last week the bus driver earned $1000 in total compensation, how many total hours did he work that week?
A.46
B.40
C.44
D.48
Answer: A.46
Explanation: For 40 hrs = 40*20=800
Excess = 1000-800=200
For extra hours =.75(20)=15+20=35
Number of extra hrs =200/35=5.71=6 approx.
Total hrs =40+6=46
Answer A 46
Question: If a and b are odd integers, which of the following is an even integer?
A.2ab+a
B.2ab-b
C.2ab+a+b
D.2ab+2a+b
Answer: C.2ab+a+b
Explanation: 2ab+a+b=even+odd+odd=even
The answer is C.
Question: How many digits are required to number a book containing 260 pages?
A.784
B.672
C.492
D.372
Answer: B.672
Explanation: 9 pages from 1 to 9 will require 9 digits.
90 pages from 10 to 99 will require 90*2=180 digits.
260-(90+9)=161 pages will require 161*3=483 digits.
The total number of digits is 9+180+483=672.
The answer is B.
Question: In a certificate by mistake a candidate gave his height as 25% more than actual height. In the interview panel, he clarified that his height was 5feet 5 nches. Find the % correction made by the candidate from his stated height to his actual height?
A.10
B.20
C.30
D.43
Answer: B.20
Explanation: His height was = 5 feet 5 inch = 5 + 60 = 65 inch. Required % correction =65*(1.25-1)* 100 = 20
B
Question: A train speeds past a pole in 15 seconds and a platform 100 m long in 40 seconds. Its length is?
A.188 m
B.876 m
C.251 m
D.100 m
Answer: D.100 m
Explanation: Let the length of the train be x meters and its speed be y m/sec.
They, x / y = 15 => y = x/15
x + 100 / 40 = x / 15
x = 100 m.
Answer: D
Question: A bag contains 12white and 18black balls. 2balls are drawn in succession. What is the probability that first is white and second is black?
A.31/145
B.36/145
C.32/145
D.36/147
Answer: B.36/145
Explanation: The probability that first ball is white:
=12C130C1=12C130C1
=1230=1230
=25=25
Since, the ball is not replaced; hence the number of balls left in bag is 29.
Hence, the probability the second ball is black:
=18C129C1=18C129C1
=1829=1829
Required probability,
=(25)×(1829)=(25)×(1829)
=36/145
B
Question: John and Mary were each paid x dollars in advance to do a certain job together. John worked on the job for 9 hours and Mary worked 2 hours less than John. If Mary gave John y dollars of her payment so that they would have received the same hourly wage, what was the dollar amount, in terms of y, that John was paid in advance?
A. 4y
B. 5y
C. 6y
D. 17y
Answer: D. 17y
Explanation: Let $x be the advance that both receive = 2x
Amount earned per hour by John and Mary = x/9 and x/8
Mary gives $y to John to make the wages earned equal
Hence John wage per hr = (x+y)10 which is now equal to Mary's wage (x-y)/8
Solve (x+y)9 = (x-y)/8
8x + 8y = 9x -9y
x = 17y
Ans. D
Question: A man swims downstream 72 km and upstream 45 km taking 9 hours each time; what is the speed of the current ?
A.1 kmph
B.3.2 kmph
C.1.5 kmph
D.2 kmph
Answer: C.1.5 kmph
Explanation: Explanation:
72 --- 9
? ---- 1
=> Down Stream = 8
45 ---- 9
? ---- 1
=> Up Stream = 5
Speed od current S = ?
S = (8 - 5)/2 = 1.5 kmph.
ANSWER IS C
Question: Sachin is younger than Rahul by 7 years. If the ratio of their ages is 6:9, find the age of Sachin
A.24.5
B.14
C.24.21
D.27
Answer: B.14
Explanation: Explanation:
If Rahul age is x, then Sachin age is x - 7,
so,
9x - 63 = 6x
3x = 63
x = 21
So Sachin age is 21 - 7 = 14
Answer: B) 14
Question: A man takes 5 hours 45 min in walking to a certain place and riding back. He would have gained 2 hours by riding both ways. The time he would take to walk both ways is
A.7hours 75 mins
B.7 hours
C.8 hours
D.5 hours
Answer: A.7hours 75 mins
Explanation: Given that time taken for riding both ways will be 2 hours lesser than
the time needed for waking one way and riding back
From this, we can understand that
time needed for riding one way = time needed for waking one way - 2 hours
Given that time taken in walking one way and riding back = 5 hours 45 min
Hence The time he would take to walk both ways = 5 hours 45 min + 2 hours = 7 hours 45 min
Answer is A.
Question: Two goods trains each 850 m long are running in opposite directions on parallel tracks. Their speeds are 45 km/hr and 30 km/hr respectively. Find the time taken by the slower train to pass the driver of the faster one?
A.22 sec
B.81.6 sec
C.48 sec
D.18.3 sec
Answer: B.81.6 sec
Explanation: Relative speed = 45 + 30 = 75 km/hr.
75 * 5/18 = 125/6 m/sec.
Distance covered = 850 + 850 = 1700 m.
Required time = 1700 * 6/125 = 81.6 sec.
Answer:B
Question: Sujit incurred a loss of 45% on selling an article for Rs.3850/-. What was the cost price of the article?
A.Rs.5725/-
B.Rs.5080/-
C.Rs.6250/-
D.Rs.7000/-
Answer: D.Rs.7000/-
Explanation: Explanation:
45% loss means SP of Rs.3850/- is 55% of CP
:. CP = 3850x100/55 = Rs.7000/-
Answer: Option D
Question: The sum of the ages of 4 children born at the intervals of 3 years each is 36 years. what is the age of the youngest child ?
A.22
B.18
C.4.5
D.99
Answer: C.4.5
Explanation: Let x = the youngest child. Each of the other four children will then be x+3, x+6, x+9
We know that the sum of their ages is 36
so, x+(x+3)+(x+6)+(x+9)= 36
therefore The youngest child is 4.5 years old
Answer: C
Question: At the end of three years what will be the compound interest at the rate of 10% p.a. on an amount of Rs.5000?
A.1655
B.2888
C.2776
D.2997
Answer: A.1655
Explanation: A = 5000(11/10)^3
= 6655
= 5000
----------
1655
Answer: A
Question: Can you find the missing number in the sequence given below?
10 18 26 11 19 ? 12 20 28 13 21 29
A.25
B.23
C.20
D.27
Answer: D.27
Explanation: Let's break the given series as below:
10 18 26
11 19 ?
12 20 28
13 21 29
Now read the number from left hand side from top to bottom as :
So the number that will replace '?' is 27
Answer : D
Question: 2,5,12,31,81,__
A.210
B.211
C.213
D.214
Answer: C.213
Explanation: 12= 5*2+2
31= 12*2+5+2
81= 31*2+12+5+2
Similarly 81*2+31+12+5+2 = 162+50=212
ANSWER:C
Question: A rectangle PRSU, is divided into two smaller rectangles PQTU, and QRST by the line TQ. PQ = 10 cm. QR = 5 cm and RS = 10 cm. Points A, B, F are within rectangle PQTU, and points C, D, E are within the rectangle QRST. The closest pair of points among the pairs (A, C), (A, D), (A, E), (F, C), (F, D), (F, E), (B, C), (B, D), (B, E) are 10 3 cm apart.
Which of the following statements is necessarily true?
A.The closest pair of points among the six given points cannot be (F, C)
B.Distance between A and B is greater than that between F and C.
C.The closest pair of points among the six given points is (C, D), (D, E), or (C, E).
D.none of the above
Answer: D.none of the above
Explanation: Explanation :
We have not been given the distances between any two points.
Answer : D
Question: If |x + 2| = 10, what is the sum of all the possible values of x?
A.-16
B.-13
C.-4
D.-2
Answer: C.-4
Explanation: There will be two cases
x+2 = 10 or x+2 = -10
=> x = 8 or x= -12
sum of both the values will be -12 + 8 = -4
Answer: C
Question: How many Q ways are there of placing 6 marbles in 4 bowls, if any number of them can be placed in each bowl?
A.6C4
B.6P4
C.4^6
D.6^4
Answer: C.4^6
Explanation: Each marble has 4 options, so there are total of Q= 4*4*4*4*4*4=4^6 ways.
Answer: C.
The total number of ways of dividing n identical items among r persons, each one of whom, can receive 0,1,2 or more items is (n+r -1)C(r-1).
Question: Ratio between Rahul and Deepak is 4:3, After 6 Years Rahul age will be 26 years. What is Deepak present age
A.14
B.15
C.20
D.22
Answer: B.15
Explanation: Explanation:
Present age is 4x and 3x,
=> 4x + 6 = 26 => x = 5
So Deepak age is = 3(5) = 15
Answer: Option B
Question: A clock is set right at 1 p.m. If it gains one minute in an hour, then what is the true time when the clock indicates 6 p.m. in the same day?
A.55 5⁄61 minutes past 5
B.5 minutes past 6
C.5 minutes to 6
D.59 1⁄64 minutes past 5
Answer: A.55 5⁄61 minutes past 5
Explanation: Time interval indicated by incorrect clock
= 6 p.m – 1 p.m = 5hrs.
Time gained by incorrect clock in one hour
= + 1 min. = +1⁄60 hr.
Using the formula, True time interval /Time interval in incorrect clock
= 1 /1+hour gained in 1 hour by incorrect clock
⇒ Truetimeinterval/5=1/1+1/60
⇒ True time interval = 5×60/61=4 56/61
∴ True time = 1 p.m. + 4 56/61 hrs.
= 5 p.m. + 56⁄61 hrs. = 5 p.m. + 56⁄61 × 60 min.
= 555⁄61 minutes past 5.
Answer A
Question: what is the smallest integer that is multiple of 5,7,8
A.A)70
B.B)35
C.C)200
D.D)280
Answer: D.D)280
Explanation: It is the lcm of 5, 7 and 8 which is 280.
The answer is D.
Question: 25% of the total cost of a plot of area 280 sq.ft. is Rs.132370. What is the rate per sq.ft of the plot?
A.Rs.2091
B.Rs.1891
C.Rs.1981
D.Rs.1991
Answer: B.Rs.1891
Explanation: Explanation:
25% = ¼
:. Cost of total area = Rs.132370x4
Rate per sq.ft = 132370x4/280 = Rs.1891/-
Answer: Option B
Question: Irin, Ingrid and Nell bake chocolate chip cookies in the ratio of 9.18: 5.17: 2.05. If altogether they baked a batch of 148 cookies, what percent of the cookies did Ingrid bake?
A.0.125%
B.1.25%
C.31.7%
D.125%
Answer: C.31.7%
Explanation: 9.18x+5.17x+2.05x = 16.4x = 148 cookies
x= 148/16.4 = 9 (approx)
So, Ingrid baked 9*5.17 cookies or 47 cookies (approx)
% share = 47/148 = 31.7 approx
Hence, answer is C.
Question: X and Y started a business investing Rs. 50,000 and Rs 40,000 respectively. In what ratio the profit earned after 2 years be divided between X and Y respectively?
A.3:2
B.9:2
C.5 : 4
D.1:4
Answer: C.5 : 4
Explanation: X:Y = 50000 : 40000 = 5 : 4
ANSWER:C
Question: A man whose bowling average is 12.4, takes 8 wickets for 26 runs and there by decreases his average by 0.4. the number of wickets taken by him before his last match is?
A.173
B.174
C.175
D.176
Answer: C.175
Explanation: 12.4*x+26=(8+x)12
solve equation x=175
ANSWER:C
Question: An article is bought for Rs.675 and sold for Rs.900, find the gain percent?
A.6 %
B.8 %
C.5 5/11%
D.11 %
Answer: C.5 5/11%
Explanation: Explanation:
Cost Price (C.P.) = Rs. (4700 + 800) = Rs. 5500.
Selling Price (S.P.) = Rs. 5800.
Gain = (S.P.) - (C.P.) = Rs.(5800 - 5500) = Rs. 300.
Gain % =(300/5500	x 100)%= 5 5/11%
Answer:C
Question: People standing in a straight line are wearing alternating colored shirts. The pattern of shirts begins with red, followed by green, blue, and yellow. This pattern continues (red, green, blue, and yellow) until it ends with a green shirt. If there are more than 4 people in line, which of the following cannot be the number of people in the line?
A.18
B.22
C.42
D.41
Answer: D.41
Explanation: The correct answer should not take the form: 4x + 2. Hence, it is D
Question: If x/|y| = 1 which of the following must be true?
A.x = -y
B.x = y
C.x = y^2
D.x^2 = y^2
Answer: D.x^2 = y^2
Explanation: x/|y| = 1
x= 1 |y|
Squaring both sides
x^2= (1 |y|) ^2= y^2
D is the answer