RikoteMaster/aqua-rat-mcqa huggingface dataset:
Question: A Kloke's train rails across an open track at 250 kilometers per hour. A regular passenger train travels at 68% of the Kloke's train speed. If the two trains start moving from the same station at the same time, how much time longer will it take the passenger train than the Kloke's to travel 850 kilometers?
A.1 hour and 24 minutes.
B.1 hour and 36 minutes.
C.2 hours and 24 minutes.
D.2 hours and 36 minutes.
Answer: B.1 hour and 36 minutes.
Explanation: Difference in time = time taken by passenger train- time taken by Kloke's train
850/(250*68) *100 - 850/250
850 (100/ 250*68 - 1/250)
850*32/ (250*68)
1.6 hrs or 1 hr and 36 mins
B is the answer
Question: Pipe A can fill a tank in 4 hours. Due to a leak at the bottom, it takes 6 hours for the pipe A to fill the tank. In what time can the leak alone empty the full tank?
A.12
B.67
C.95
D.36
Answer: A.12
Explanation: Let the leak can empty the full tank in x hours 1/4 - 1/x = 1/6
=> 1/x = 1/4 - 1/6 = (3 - 2)/12 = 1/12
=> x = 12.
Answer: A
Question: The speed at which a woman can row a boat in still water is 120 kmph. If she rows downstream, where the speed of current is 60 kmph, what time will he take to cover 500 metres?
A.8
B.9
C.10
D.11
Answer: C.10
Explanation: Speed of the boat downstream = 120 + 60 = 180 kmph
= 180 * 5/18 = 50 m/s
Hence time taken to cover 500 m = 500/50 = 10 seconds.
Answer: C
Question: The ratio of investments of two partners P and Q is 7:5 and the ratio of their profits is 7:10. If P invested the money for 5 months, find for how much time did Q invest the money?
A.22
B.6
C.17
D.10
Answer: D.10
Explanation: 7*5: 5*x = 7:10
x = 10
Answer:D
Question: A train covers a distance of 12 km in 10 min. If it takes 12 sec to pass a telegraph post, then the length of the train is?
A.178 m
B.240 m
C.120 m
D.168 m
Answer: B.240 m
Explanation: Speed = (12/10 * 60) km/hr = (72 * 5/18) m/sec
= 20 m/sec.
Length of the train = 20 * 12
= 240 m.
Answer: B
Question: Calculate the effect changes in dimension of a rectangle will have on its area, if length is increased by 20% and its breadth is decreased by 5%?
A.14 percent increase
B.5 percent increase
C.24 percent increase
D.13 percent increase
Answer: A.14 percent increase
Explanation: let L and B be 100 each
100 * 100 = 10000
L increase by 20% = 120
B decrease by 5% = 95
120 * 95 = 11400
14 percent increase
ANSWER:A
Question: If the two-digit integers A and B are positive and have the same digits, but in reverse order, which of the following could be the sum of A and B?
A.53
B.54
C.55
D.56
Answer: C.55
Explanation: A two-digit number "cd" can be expressed algebraically as 10c+d.
The sum of A + B = (10c+d)+(10d+c)=11(c+d).
The only answer that is a multiple of 11 is 55.
The answer is C.
Question: In how many different ways can the letters of the word ‘POSITIVE’ be arranged ?
A.120
B.720
C.40320
D.24
Answer: C.40320
Explanation: C
40320
Required number of arrangements = 8! = 40320
Question: (128.5 x 64) + (13.8 x 465) = ? x 25
A.524.48
B.556.02
C.574.36
D.585.64
Answer: D.585.64
Explanation: Explanation :
? = (128.5 x 64) + (13.8 x 465)/25
= 8224 + 6417/25 = 585.64
Answer : Option D
Question: In a certain deck of cards, each card has a positive integer written on it, in a multiplication game a child draws a card and multiplies the integer on the card with the next large integer. If the each possible product is between 15 and 150, then the least and greatest integer on the card would be
A.3 and 15
B.3 and 20
C.4 and 12
D.4 and 14
Answer: C.4 and 12
Explanation: Given: 15<x(x+1)<170.
Now, it's better to test the answer choices here rather than to solve:
If x=4 then x(x+1)=20>15 --> so, the least value is 4. Test for the largest value: if x=12 then
x(x+1)=12*13=156>150
Answer: C.
Question: If a motor bike's wheel is 12 cm diameter and rotating at the rate of x cm/min and another motor bike's wheel is 6 cm diameter rotating at the rate of y cm/min and if both the bikes reach the distance at same time then what is the value of y in terms of x?
A.4x/2
B.3x/6
C.4x/2
D.1x/2
Answer: D.1x/2
Explanation: t=S1/V1=S2/V2
or 12/x=6/y
or y=6x/12=1x/2
Answer is D
Question: The diagonal of a rectangle is √41 cm and its area is 20 sq. cm. The perimeter of the rectangle must be:
A.18
B.28
C.38
D.48
Answer: A.18
Explanation: Explanation:
l2 + b2 = 41
Also, lb = 20
(l + b)2 = l2 + b2 + 2lb
= 41 + 40 = 81
(l + b) = 9
Perimeter = 2(l + b) = 18 cm. Answer: A
Question: The ratio of the present ages of Giri and Hari is 5 : 8. 12 years hence, the ratio of their ages will be 11 : 14. Find the difference in their present ages?
A.8
B.6
C.5
D.4
Answer: B.6
Explanation: Let the present ages of Giri and Hari be 5x and 8x years respectively.
(5x + 12) / (8x + 12) = 11/14
70x + 168 = 88x + 132 => x= 2
Difference in their ages will be the same at all times.
This difference = Difference of their present ages
= 8x - 5x = 3x = 6 years.
Answer:B
Question: How many multiples of 5 are there between 5 to 95?
A.9
B.18
C.17
D.none of these
Answer: C.17
Explanation: Explanation :
As you know, multiples of 5 are integers having 0 or 5 in the digit to the extreme right (i.e. the units place).
So the numbers are 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90.
Answer : C
Question: The speed of a boat in still water is 60kmph and the speed of the current is 40kmph. Find the speed downstream and upstream?
A.kmph
B.kmph
C.kmph
D.kmph
Answer: D.kmph
Explanation: Speed downstream = 60 +40 = 100 kmph
Speed upstream = 60 - 40 = 20 kmph
Answer:D
Question: Jaclyn buys $40 000 worth of debentures in a company. She earns 9.5% p.a. simple interest, paid to her quarterly (that is, every 3 months). If the agreed period of the debenture was 18 months: calculate the amount of interest Jaclyn will earn for each quarter
A.950
B.1234
C.1289
D.1345
Answer: A.950
Explanation: Explanation:
I=(p x r x t)/100
= 40000*9.5/100*(18/12)^1/6 = 950
Answer: A
Question: If S = T/P, -1 < P < 0 and 4 < T, which of the following is correct?
A.S > 4.
B.0 < S <4.
C.-4 < S < 0.
D.S < -4.
Answer: D.S < -4.
Explanation: T is +veP is -ve
Eliminate AB
For min. value max. numerator and minimize dinominator
take T=4.1S=-0.9
S=4.1/-0.9
S<-4
Ans D
Question: A train passes a station platform in 36 seconds and a man standing on the platform in 20 seconds. If the speed of the train is 54 km/hr, what is the length of the platform?
A.877 m
B.240 m
C.167 m
D.887 m
Answer: B.240 m
Explanation: Speed = (54 * 5/18) m/sec = 15 m/sec. Length of the train
= (15 x 20)m = 300 m. Let the length of the platform be x meters. Then, (x + 300)/36 = 15
==> x + 300 = 540 ==> x
= 240 m.
Answer: B
Question: Walking at the rate of 8kmph a man cover certain distance in 4hr 45min. Running at a speed of 19 kmph the man will cover the same distance in.
A.100 min
B.110 min
C.140 min
D.120 min
Answer: D.120 min
Explanation: Distance = Speed * time
8*19/4= 38km
New Speed = 19kmph
Therefore time = D/S = 38/19= 120 min
Answer : D.
Question: A palindrome is a number that reads the same forward and backward, such as 464. How many odd five-digit numbers are palindromes?
A.40
B.400
C.500
D.5,000
Answer: C.500
Explanation: 5th digit 1,3,5,7,9
4th digit 0 through 9
3rd digit 0 through 9
i.e 10*10*5 = 500 numbers
first and second digit is going to be same as 4th and 5th. so it would still be 400 numbers.
Answer is C.
Question: A real estate investor decided to sell five of his apartments at the cost of $168,000, $235,000, $157,000, $ 256,000 and $ 235,000. Due to a bidding war, the price on the most expensive apartment will likely be sold for $15,000 higher than the initial asking price. Which of the following best describes how the mean and median would change as a result of a higher sale price on the most expensive apartment?
A.Both the mean and median will be unchanged.
B.The median will change but the mean remains unchanged.
C.The median will remain the same but the mean will increase.
D.Both the mean and the median will increase by the same percentage.
Answer: C.The median will remain the same but the mean will increase.
Explanation: Soln:
(C) The median will remain the same but the mean will increase.
ANSWER:C
Question: There are two circles of different radii. The are of a square is 784 sq cm and its side is twice the radius of the larger circle. The radius of the larger circle is seven - third that of the smaller circle. Find the circumference of the smaller circle?
A.13
B.14
C.12
D.16
Answer: C.12
Explanation: Let the radii of the larger and the smaller circles be l cm and s cm respectively. Let the side of the square be a cm.
a2 = 784 = (4)(196) = (22).(142)
a = (2)(14) = 28
a = 2l, l = a/2 = 14
l = (7/3)s
Therefore s = (3/7)(l) = 6 Circumference of the smaller circle = 2∏s = 12∏ cm.
Answer: C
Question: A six-sided die is rolled once. What is the probability that the number rolled is an even number greater than 2?
A.4/5
B.1/3
C.2/4
D.1/5
Answer: B.1/3
Explanation: Out of the 6 possible numbers that may rolled, 3 are even: 2, 4 and 6 BUT only 4 and 6 are greater than 2. Hence the probability that the number rolled is an even number greater than 2 is given by
(number of even numbers greater than 2) / 6 = 2 / 6 = 1 / 3
correct answer B
Question: There are 6 tasks and 6 persons. Task 1 cannot be assigned either to person 1 or to person 2; task 2 must be assigned to either person 3 or person 4. Every person is to be assigned one task. In how many ways can the assignment be done?
A.144
B.180
C.192
D.360
Answer: A.144
Explanation: Task 1 can not be assigned to either person 1 or 2 i.e.there are 4 options.
Task 2 can be assigned to 3 or 4
So, there are only 2 options for task 2.
So required no. of ways = 2 options for task 2 × 3 options for task 1 × 4 options for task 3 × 3 options for task 4 × 2 options for task 5 × 1 option for task 6.
= 2 × 3 × 4 × 3 × 2 × 1 = 144
Answer A
Question: A man purchases 8 pens for Rs.9 and sells 9 pens for Rs.8, how much profit or loss does he make?
A.29.98
B.20.98
C.20.92
D.20.96
Answer: B.20.98
Explanation: 81 ---- 17
100 ----- ? è 20.98%loss
Answer:B
Question: A $500 investment and a $1,500 investment have a combined yearly return of 8.5 percent of the total of the two investments. If the $500 investment has a yearly return of 7 percent, what percent yearly return does the $1,500 investment have?
A.9%
B.10%
C.105/8%
D.11%
Answer: A.9%
Explanation: The equation we can form the question :
Return on Total Investment = Sum of individual Investments
(500+1500)(8.5)=(500∗7)+(1500x), where x is the return on investment of 1500.
Solving the equation, we get x = 9% ( Option A )	ANSWER:A
Question: A box contains 4 blue marbles, 3 red, 6 green marbles and two yellow marbles. If two marbles are picked at random, what is the probability that they are either blue or yellow?
A.5/10
B.4/10
C.1/10
D.2/10
Answer: C.1/10
Explanation: Given that there are 4 blue marbles, 3 red marbles, 6 green marbles and 2 yellow marbles. Probability that both marbles are blue = 4Câ‚‚/Â¹âµCâ‚‚ = (3 * 2)/(15 * 14) = 2/35
Probability that both are yellow = Â²Câ‚‚/Â¹âµCâ‚‚ = (1)/(15 * 14) = 1/210
Probability that one blue and other is yellow = (4Câ‚ * Â²Câ‚)/Â¹âµCâ‚‚ = (4*2)/(15 * 14) = 4/105
Required probability = 2/35 + 1/210 + 4/105
= 1/10
Answer:C
Question: Three numbers are in the ratio 5 : 6 : 7. The sum of its longest and smallest numbers equals the sum of the third number and 37. Find the third number?
A.A)37
B.B)85
C.C)48
D.D)43
Answer: A.A)37
Explanation: Let the numbers be 5x, 6x, 7x.
Largest number = 7x.
Smallest number = 5x.
Third number = 6x.
7x + 5x = 6x + 37
6x = 48 => third number is 37.
Answer: Option A
Question: A person has to cover a distance of 6km in 45 minutes. If he covers one half of the distance in two-thirds of the total time; to cover the remaining distance in the remaining time, his speed must be?
A.12km per hr
B.10km/hr
C.15km/hr
D.20km/hr
Answer: A.12km per hr
Explanation: Remaining distance = 3km
Remaining time = 1/3 * 45 = 15min = 1/4 hour
Required speed = 3*4 = 12km/hr
Answer is A
Question: Two men A and B start from place X walking at 4 ½ kmph and 5 ¾ kmph respectively. How many km apart they are at the end of 3 ½ hours if they are walking in the same direction?
A.4 3/9 km
B.5 3/8 km
C.4 3/8 km
D.6 3/8 km
Answer: C.4 3/8 km
Explanation: RS = 5 ¾ - 4 ½ = 1 ¼
T = 3 ½ h.
D = 5/4 * 7/2 = 35/8 = 4 3/8 km
Answer:C
Question: If 16 men can reap 80 hectares in 24 days , then how many hectares can 36 men reap in 30 days?
A.127
B.225
C.287
D.450
Answer: B.225
Explanation: Explanation:
Let the required no of hectares be x. Then
Men --- Hectares---Days
16---------80---------24
36---------x---------30
More men, More hectares (Direct proportion)
More days, More hectares (Direct proportion)
x=36/16*30/24*80
x= 225
Answer: B
Question: If p is a positive integer, and r is the units digit of 3^4p×5^5p×6^6p×7^7p then r + 2 is divisible by which of the following?
A.2
B.3
C.5
D.7
Answer: A.2
Explanation: The number will be an even number as it contains 6 as a term in its product, so units digit will be even..
EVEN +2 will be another EVEN and will be div by 2..
ANSWER:A
Question: A reduction of 18% in the price of oil enables a house wife to obtain 8kgs more for Rs.1080, what is the reduced price for kg?
A.72.15
B.27.24
C.24.25
D.28.46
Answer: C.24.25
Explanation: 1080*(18/100) = 194 ---- 8
? ---- 1 => Rs.24.25
Answer:C
Question: Due to 10% decrease in the price of sugar and John can buy 5kg more sugar in Rs100 , then find the CP of sugar?
A.Rs.2(1/9)
B.Rs.2(2/9)
C.Rs.3(1/9)
D.Rs.1(1/9)
Answer: B.Rs.2(2/9)
Explanation: Here r = 10 % ,x = 100 and A = 5 kg
Actual price of sugar = 10*100/((100-10 )*5) = Rs.2(2/9)
B
Question: A man went into a bank to cash a check. In handing over the money the cashier, by mistake, gave him dollars for cents and cents for dollars. He pocketed the money without examining it, and spent a nickel on his way home. He then found that he possessed exactly twice the amount of the check. He had no money in his pocket before going to the bank. What was the exact amount of that check?
A.$31.63
B.$35.63
C.$32.63
D.$37.63
Answer: A.$31.63
Explanation: A
$31.63
The amount must have been $31.63. He received $63.31. After he had spent a nickel there would remain the sum of $63.26, which is twice the amount of the check.
Question: Lorna invests $7000, with some at 6% annual interest and some at 11% annual interest. If she receives a total of $580 from these investments at the end of a year, how much was invested at the 6% interest rate?
A.$160
B.$1,600
C.$2,200
D.$1,400
Answer: D.$1,400
Explanation: We have that 'x' invested at 6%
We also have that '6000-x' invested at 11%
Now then 580/7000 is approx 10%
Therefore, -4x+7000-x=0
5x=7000
x=1400 approximately. Probably higher
Only D matches
Question: By travelling at 70 kmph, a person reaches his destination on time. He covered two-third the total distance in one-third of the total time. What speed should he maintain for the remaining distance to reach his destination on time?
A.25 kmph
B.20 kmph
C.28 kmph
D.35 kmph
Answer: D.35 kmph
Explanation: Let the time taken to reach the destination be 3x hours. Total distance = 70 * 3x = 210x km
He covered 2/3 * 210x = 140x km in 1/3 * 3x = x hours So, the remaining 70x km, he has to cover in 2x hours. Required speed = 70x/2x
=35 kmph.
Answer: D
Question: The profit earned by selling an article for $ 832 is equal to the loss incurred when the same article is sold for $ 448. What should be the sale price for making 50% profit?
A.$480
B.$450
C.$960
D.$870
Answer: C.$960
Explanation: C
$ 960
Let C.P. = $ x.
Then, 832 - x = x - 448
2x = 1280 => x = 640
Required S.P. = 150% of $ 640 = 150/100 * 640 = $ 960.
Question: Carmelo and LeBron participate in a seven-person footrace on the basketball court during All-Star Weekend. If all seven contestants finish (including Charles Barkley) and there are no ties, how many different arrangements of finishes are there in which Carmelo defeats LeBron?
A.5040
B.2520
C.720
D.120
Answer: B.2520
Explanation: 7! = 5040
5040/2=2520 half the time carmelo is in front, vice versa
Answer:
(B) 2520
Question: Anand and Deepak started a business investing Rs.22,500 and Rs.35,000 respectively. Out of a total profit of
Rs. 13,800. Deepak's share is
A.Rs 9600
B.Rs 8500
C.Rs 8450
D.Rs 8400
Answer: D.Rs 8400
Explanation: Explanation:
Ratio of their shares	= 22500 : 35000
=9 : 14
Deepak's share	= Rs.(13800×14/23)
= Rs. 8400
Option D
Question: A man performs 1/2 of his journey by rail, 2/5 by bus and the remaining 10 km on foot. His total journey is?
A.40km
B.50km
C.60km
D.70km
Answer: B.50km
Explanation: Let the total journey be x km
x/2 + 2x/5 + 10 = x
9x+50 = 10x
x = 50 km
Answer is B
Question: If n is a positive integer, which of the following expressions must be even?
A.(n − 3)( n + 1)
B.(n − 8)( n + 1)
C.(n − 4)( n + 4)
D.(n − 5)( n + 1)
Answer: B.(n − 8)( n + 1)
Explanation: Whether n is even or odd, (n-8)(n+1) will have one odd factor and one even factor.
The product will be even.
The answer is B.
Question: The average age of three boys is 25 years and their ages are in the proportion 3 : 5 : 7. The age of the youngest boy is:
A.21 years
B.18 years
C.15 years
D.9 years
Answer: C.15 years
Explanation: Total age of 3 boys = (25 × 3) years = 75 years. Ratio of their ages = 3 : 5 : 7.
Age of the youngest = (75 × 3⁄15) years = 15 years.
Answer C
Question: List I: { y, 2, 4, 7, 10, 11}
List II: {3, 3, 4, 6, 7, 10}
If the median T of List I is equal to the sum of the median of list II and the mode of list II, then y equals
A.5
B.7
C.8
D.T=9
Answer: D.T=9
Explanation: mode of list ii =3
median T of list ii =4+6/2 =5
sum of mode + mean = 3+ 5=8
now to make 8 as the median we need to find a value of y such that if the no. of terms in list 1 are odd then y=8 else if even then 7+y /2=8
here its even so
7+y/2=8 from this y= 9 (D)
Question: The value of a machine depreciates at 20% per annum. If its present value is Rs. 1,50,000, at what price should it be sold after two years such that a profit of Rs. 27,000 is made?
A.Rs. 1,10,000
B.Rs. 1,23,000
C.Rs. 1,24,000
D.Rs. 1,21,000
Answer: B.Rs. 1,23,000
Explanation: The value of the machine after two years = 0.8 * 0.8 * 1,50,000 = Rs. 96,000
SP such that a profit of Rs. 24,000 is made = 96,000 + 27,000 = Rs. 1,23,000
ANSWER:B
Question: If two integers x,y (x>y) are selected from -5 to 6 (inclusive), how many cases are there?
A.62
B.66
C.70
D.74
Answer: B.66
Explanation: There are 12 integers from -5 to 6 inclusive.
12C2 = 66.
The answer is B.
Question: Six animals of a circus has to be placed inside in six cages one in each cage. If 4 of the cage are too small for 6 of the animal then find the number of ways of caging the animal.
A.A.240
B.B.808250
C.C.502450
D.D.784200
Answer: A.A.240
Explanation: ways for cages that are too small = 5*4*3*2=120
since we have 2 cages and 2 animal left therefore ways for 2 cages =2!
total ways =120*2!=604800
Answer A
Question: How many two-digit whole numbers yield a remainder of 3 when divided by 10 and also yield a remainder of 3 when divided by 4?
Options:
A.ONE
B.TWO
C.THREE
D.FOUR
Answer: D.FOUR
Explanation: Numbers giving remainder 3 when divided by 10 = 13,23, 33,43, 53,63, 73,83, 93
Numbers giving remainder 3 when divided by 4 = Alternate numbers (coloured in red) = 4
Correct Option:	D
Question: In a class there are a total of 8 rows of desks and each desk can seat one student. There are 10 desks in the first row. In each subsequent row there are 2 more desks than in the previous row. Find the maximum number of students seated in the class?
A.112
B.144
C.136
D.132
Answer: C.136
Explanation: The 8 rows form an Arithmetic progression with first term 10 and last 24. Avg is 17.
so 17*8=136
Answer is C.
Question: In how many ways can the letters of word CREMATION be arranged such that NO two vowels appear together?
A.9!
B.5!*4!
C.4!*5!
D.5!*4!*2!
Answer: C.4!*5!
Explanation: No 2 vowels together = the only arrangement possible will be C V C V C V C V (with V=vowel, C=consonant). This is true as we have 4 vowels and 5 consonants and any other combination will force us to pair 2 vowels together.
Thus, the number of arrangements possible : 5 *4 *4 *3 *3 *2 *2*1 = 4!*5! ----> C is the correct answer.
Question: A factory produces 4560 toys per week. If the workers at this factory work 4 days a week and if these workers make the same number of toys everyday, how many toys are produced each day?
A.1140 toys
B.2375 toys
C.3375 toys
D.4375 toys
Answer: A.1140 toys
Explanation: To find the number of toys produced every day, we divide the total number of toys produced in one week (of 4 days) by 4.
4560 / 4 = 1140 toys
correct answer A
Question: A and B together have Rs. 1210. If 4/15 of A's amount is equal to 2/5 of B's amount, how much amount does B have?
A.Rs. 460
B.Rs. 484
C.Rs. 550
D.Rs. 664
Answer: B.Rs. 484
Explanation: (4/15)A = (2/5)B
A = (2/5 * 15/4)B
A = (3/2)B
(A/B) = (3/2)
A : B = 3: 2
B's share = Rs. (1210 * 2/5) = Rs. 484
Answer = B
Question: Train starts from amritsar to Bombay at 9am. It reaches destination after 3days at 9:30am. Every day a train starts. How many trains does it come across on the way ?
A.5th
B.4th
C.6th
D.7th
Answer: B.4th
Explanation: because one train taking 3 days
so 1 train first day
another at second day
and 3rd one at third day
but as given train reaches at 9.30 am insted of 9.oo am
so d same day train already left
that train will be 4th train.
ANSWER:B
Question: By selling 150 mangoes, a fruit-seller gains the selling price of 30 mangoes. Find the gain percent?
A.26%
B.25%
C.15%
D.28%
Answer: B.25%
Explanation: SP = CP + g
150 SP = 150 CP + 30 SP
120 SP = 150 CP
120 --- 30 CP
100 --- ? => 25%
Answer:B
Question: There were two candidates in an election. Winner candidate received 56% of votes and won the election by 288 votes. Find the number of votes casted to the winning candidate?
A.776
B.1344
C.299
D.257
Answer: B.1344
Explanation: W = 56% L = 44%
56% - 44% = 12%
12% -------- 288
56% -------- ? => 1344
Answer:B
Question: Rahul went to purchase a Nokia mobile handset, the shopkeeper told him to pay 20% tax if he asked the bill. Rahul manages to get the discount of 5% on the actual saleprice of the mobile and he paid the shopkeeper Rs. 3325 without tax. Besides he manages to avoid to pay 20% tax on the already discounted price, what is the amount of discount that he has gotten?
A.750
B.375
C.875
D.525
Answer: C.875
Explanation: Explanation:
CP = 100, SP (with tax) =120
New SP = 100 - 5 = 95
\therefore Effective discount = 120 - 95 = 25
So, at SP of 95 ----> discount = 25
and at SP of 3325 -----> discount = 25/95=3325=875.
Answer: C
Question: A 2-year certificate of deposit is purchased for E dollars. If the certificate earns interest at a n annual rate of 6 percent compound quarterly, which of the following represents the value, in dollars, of the certificate at the end of 2 years?
A.k(1.06)^2
B.k(1.06)^8
C.k(1.015)^2
D.E(1.015)^8
Answer: D.E(1.015)^8
Explanation: Annual Rate of interest= 6%
Quaterly rate of interest= 6/4% = 1.5%
Now, periods of compounding in 2 years= 8 (8 quarters)
Thus E(1.015)^8
Answer: D
Question: Farm Tax is levied on the 50% of the cultivated Land. The tax department collected total $ 3840 through the farm Tax from the village of Mr. william. Mr. william paid only $ 480 as farm tax. The percentage of total land of Mr. willam over the total taxable land of the village is :
A.15%
B.25%
C.0.125%
D.0.2083%
Answer: B.25%
Explanation: This will be equal to the percentage of total cultivated land he holds over the total cultivated land in the village. That leads to (480/3840)x100 =12.5%in percentage terms.
But the question asks ratio between his total land to total cultivated land. Hence the answer is 12.5%x (100/50) = 25%
The correct answer is (B).
Question: Two trains are moving in opposite directions at 60 km/hr and 90 km/hr. Their lengths are 1.15 km and 0.6 km respectively. The time taken by the slower train to cross the faster train in seconds is?
A.42
B.9
C.7
D.67
Answer: A.42
Explanation: :
Relative speed = 60 + 90 = 150 km/hr.
= 150 * 5/18 = 125/3 m/sec.
Distance covered = 1.15 + 0.6 = 1.75 km = 1750 m.
Required time = 1750 * 3/125
= 42 sec.
Answer: A