Profit & loss questions & answers

1. / Alfred buys an old scooter for Rs. 4700 and spends Rs. 800 on its repairs. If he sells the scooter for Rs. 5800, his gain percent is:
A. / 4 / 4 / %
7
/ B. / 5 / 5 / %
11
C. / 10% / D. / 12%
2. The cost price of 20 articles is the same as the selling price of x articles. If the profit is 25%, then the value of x is:
A. / 15 / B. / 16
C. / 18 / D. / 25
3. If selling price is doubled, the profit triples. Find the profit percent.
A. / 66 / 2
3
/ B. / 100
C. / 105 / 1
3
/ D. / 120
x
4.In a certain store, the profit is 320% of the cost. If the cost increases by 25% but the selling price remains constant, approximately what percentage of the selling price is the profit?
A. / 30% / B. / 70%
C. / 100% / D. / 250%
5. vendor bought toffees at 6 for a rupee. How many for a rupee must he sell to gain 20%?
A. / 3 / B. / 4
C. / 5 / D. / 6

Time and Work Questions Answers

  1. Worker A takes 8 hours to do a job. Worker B takes 10 hours to do a job. How long should it take both A and B, working together to do same job.

(A)49 B. 249C. 349D.449

  1. A and B can together complete a piece of work in 4 days. If A alone can complete the same work in 12 days, in how many days can B alone complete that work ?

(A)4 daysB. 5 days C. 6 days D. 7 days

3. A does a work in 10 days and B does the same work in 15 days. In how many days they together will do the same work ?

(A.)5 days B.6 days C .7 days D. 8 days

4. A can finish a work in 18 days and B can do same work in half the time taken by A. then working together, what part of same work they can finish in a day

(A) 1\5 (B) 1\6 (C) 1\7 (D) 1\8

5. A tyre has two punctures. The first puncture alone would have made the tyre flat in 9 minutes and the second alone would have done it in 6 minutes. If air leaks out at a constant rate, how long does it take both the punctures together to make it flat ?

(A) 315min(B)325min(C) 335min(D) 345min

Time and Distance Questions Answers

  • 1. How many minutes does Aditya take to cover a distance of 400 m, if he runs at a speed of 20 km/hr

(A) 115min(B) 215min(C) 315min (D) 415min

  • 2. A cyclist covers a distance of 750 meter in 2 minutes 30 seconds. What is the speed in km/hr of cyclist

(A) 16 km/hr (B) 17 km/hr (C) 18 km/hr (D) 19 km/hr

  • 3. A car moves at 80 km/hr. What is the speed of the car in meters per second ?

(A)2029msec(B) 2229msec© 2429msec(D) 2629msec

  • 4. An athlete runs 200 meters in 24 seconds. His speed is ?

(A) 10 km/hr (B) 17 k/hr (C) 27 km/hr (D)30 km/hr

  • 5. A person crosses a 600 meter long street in 5 minutes. What is the speed in Km/hr

(A) 6.2 km/hr (B) 7.2 km/hr (C) 8.2 km/hr(D) 9.2 km/hr

Problems on Trains Questions Answers

1. A train is 100 meter long and is running at the speed of 30 km per hour. Find the time it will take to pass a man standing at a crossing.

(A) 10 seconds (B) 12 seconds (C) 14 seconds (D) 16 seconds

2. A train is moving at a speed of 132 km/hour. If the length of the train is 110 meters, how long will it take to cross a railway platform 165 meters long.

(A)7 second (B) 7.5 second (C) 8 second (D) 8.5 second

3. In what time will a train 100 meters long cross an electric pole, if its speed is 144 km/hr

(A) 5 seconds (B) 4.5 seconds (C) 3 seconds (D) 2.5 seconds

4. How long does a train 110 meters long running at the speed of 72 km/hour take to cross a bridge 132 meters in length ?(A) 15 seconds (B) 12.1 seconds (C) 10 seconds (D) 8.1 seconds

5. A train is 360 meter long is running at a speed of 45 km/hour. In what time will it pass a bridge of 140 meter length.(A) 20 seconds (B) 30 seconds (C) 40 seconds (D) 50 seconds

Probability Questions Answers

1.In a throw of coin what is the probability of getting head.1 (B) 2 (C) 1/2 (D)0

2. In a throw of coin what is the probability of getting tails.1 (B) 2 (C) 1/2 (D) 0

3. Two unbiased coins are tossed. What is probability of getting at most one tail ?(A) 2(B) 3(C)2(D)4

4. Three unbiased coins are tossed, what is the probability of getting at least 2 tails ?(A)1/3 (B)1/6 (C)1/2 (D)1/8

5. In a throw of dice what is the probability of getting number greater than 5(A) ½ (B) 1/3 (C) 1/5(D) 1/6