Pipe and Tank

1. What is the thikness of a pipe that has an outer diameter of 2.5 inches and inner diameter of 2.1 inches?

• ক. 0.2 inches
• খ. 0.4 inches
• গ. 2.3 inches
• ঘ. 0.3 inches

2. A patrol tank that is 1/2 full has 8 gallons petrol removed. The tank is then 1/10 full. What is the capacity, in gallons of the tank?

• ক. 40
• খ. 31/2
• গ. 20
• ঘ. 30

3. The water in a fish tank measuring 5/4 feet by 8 inches is 7 inches high. The water is poured into another tank measurinig 14 inches by 20 inches. What will be the height of water, in inches in the secont tank?

• ক. 1/4
• খ. 2
• গ. 3
• ঘ. 1/12

4. A tank is 30% full with water. If 18 liters of water is added the tank become 3/4 full. What is the capacity of the tank?

• ক. 36
• খ. 40
• গ. 45
• ঘ. 56

5. Two identical tapes fill 2/5 of a tank in 20 minutes. When one of the taps goes dry in how many minutes will the remaining one tap fill the rest of the tank?

• ক. 5 minutes
• খ. 10 minutes
• গ. 60 minutes
• ঘ. 20 minutes

6. An empty swimming pool can be filled to capacity through an inlet pipe in 3 hours and it can be completely drained by a drainpipe in 6 hours. If both pipes are fully open at the same time, in how many hours will the empty pool be filled to capacity?

• ক. 4
• খ. 6
• গ. 5
• ঘ. 5.5

7. An empty pool is being filled with water at a constant rate. It takes 6 hours to fill 2/3rd of the pool. How much time will it take to completely fill the pool?

• ক. 15
• খ. 9
• গ. 10
• ঘ. 12

8. A 45000 litter water tank is to be filled at the rate of 220 litters per minute. Estimate, to the nearest half an hour, how long it will take to fill the tank?

• ক. 4 hours
• খ. 7/2 hours
• গ. 3 hours
• ঘ. 5/2 hours

9. Which of the following fraction is the equivalent of 0.5%?

• ক. 1/20
• খ. 1/200
• গ. 1/2000
• ঘ. 1/5

10. An empty swimming pool with a capacity of 5760 gallons is filled at a rate of 12 gallons per minute. How many does it take to fill the pool to capacity?

• ক. 8
• খ. 20
• গ. 96
• ঘ. 480

11. A machine fills a bag with 7 ounces of potato chips in 3.5 seconds. At this rate, how many seconds will take the machine to fill a bag with 15 ounces of potato chips?

• ক. 6.5
• খ. 7.0
• গ. 7.5
• ঘ. 8.0

12. If a pipe fills a tank in h hours what part of the tank does it fill in 2 hours?

• ক. 2/h
• খ. h/2
• গ. 2h
• ঘ. (1 - 2)/hg

13. Three-fourth petrol of a reservoir is used to fill the petrol tanks of five trucks having the same storege capacity; What part of the total capacity of the petrol reservoir did each truck receive?

• ক. 3/20
• খ. 4/15
• গ. 2/15
• ঘ. 1/5

14. Two pipes A & B would be fill a tank in 20 & 30 minutes respectively. Both pipes being oppen, find when A must be turned off so that the tank may be just filled in 15 minutes.

• ক. After 10 minutes
• খ. After 20 minutes
• গ. After 15 minutes
• ঘ. None

15. A water tank is 5/8th full. When 100 gallons of water is used the tank is half full. What is the capacity of the water tank?

• ক. 800
• খ. 1600
• গ. 2000
• ঘ. 500

16. One pipe can fill a pool in 6 hours and a second pipe can fill the same pool in 12 hours. If both pipes work together, how long will it take to fill the pool?

• ক. 4 hours
• খ. 4.5 hours
• গ. 3 hours
• ঘ. 3.5 hours

17. A cistern can be filled in 10 hours but it takes 12 hours due to a leak in its bottom. If the cistern is full, then the time that the leak will take to empty it is:

• ক. 60 min
• খ. 80 h
• গ. 90 h
• ঘ. 60 h

18. Water flows into an empty 64-gallon drum through pipe A and follows out through pipe B. If the rate of flow through A is 2 gallons/h, how many gallons per hour must flow out through pipe B so that the drum is full in exactly 96 hours?

• ক. 2/3
• খ. 4/3
• গ. 5/2
• ঘ. 3/8

19. It takes 7/4 minutes to fill a water jar. What part of the jar would be filled in 1 minute?

• ক. 4/7
• খ. 3/4
• গ. 2/7
• ঘ. 3/7

20. One-third of a cylindrical oil tank is filled.If 3 more litters are added a half of the tank will be filled. What is the capacity in litters of the tank?

• ক. 17
• খ. 18
• গ. 14
• ঘ. 15

21. Two pipe A & B can fill a tank in 15 minutes and 20 minutes respectively. If both pipes are opend together, then after how much time B should be closed so that the tank is full in 10 minutes?

• ক. 20/3
• খ. 8
• গ. 4
• ঘ. 6

22. A pipe can fill a tank in 64 minutes and another can empty it in 32 minutes. If the tank is already half full and both pipe opened together, the tank will be--

• ক. filled in 32 minitues
• খ. emptied in 64 minutes
• গ. emptied in 32 minutes
• ঘ. filled in 64 minutes

23. A pump can fill a tank with water in 2 hours. Because of a leak, it took 7/3 hours to fill the tank. The leak can drain all water of the tank in:

• ক. 13/3 hrs
• খ. 7 hrs
• গ. 8 hrs
• ঘ. 14 hrs