# Practice Test: Question Set - 01

**1. Two tapes A and B can fill a bucket in 12 minutes and 15 minutes respectively. If both are opened and A is closed after 3 min, how much further time would it take for B to fill the bucket?**

- (A) 7 min 45
sec.

- (B) 7 min 15
sec.

- (C) 8 min 5 sec.

- (D) 8 min 15
sec.

**2. Two pipes A and B can fill a cistern in 12 minutes and 15 minutes respectively but a third pipe C can empty the full tank in 6 minutes. A and B are kept open for 5 minutes in the beginning and then C is also opened. In what time is the cistern emptied?**

- (A) 30 min

- (B) 33 min

- (C) 37½ min

- (D) 45 min

**3. One tap can fill a cistern in 2 hours and another tap can empty the cistern in 3 hours. How long will they take to fill the cistern if both the taps are opened?**

- (A) 5 hours

- (B) 6 hours

- (C) 7 hours

- (D) 8 hours

**4. A pipe can fill the cistern in 8 hours and another can empty the cistern in 13 hours. How long will they take to fill the cistern if both the tapes are opened?**

- (A) 12 hours

- (B) 20.8 hours

- (C) 24 hours

- (D) 22 hours

**5. Two pipes A and B can fill a tank in 10 hrs and 15 hrs respectively. If both the tapes are opened together, the tank will be full in**

- (A) 5 hours

- (B) 6 hours

- (C) 12½ hours

- (D) 7½ hours

**6. A cistern is normally filled in 8 hrs but takes 2 hrs longer to fill because of a leak in the bottom. If the cistern is full, the leak will empty it in ________ hrs.**

- (A) 24 hours

- (B) 30 hours

- (C) 34 hours

- (D) 40 hours

**7. Two tapes A and B can fill a tank in 6 hrs and 4 hrs respectively. If they are opened on alternate hrs and if pipe A is opened first, in how many hrs, the tank shall be filled?**

- (A) 4 hrs

- (B) 5 hrs

- (C) 4½ hrs

- (D) 5½ hrs

**8. Bucket P has thrice the capacity as bucket Q. It takes 60 turns for bucket P to fill the empty drum. How many turns it will take for both the buckets P and Q, having each turn together to fill the empty drum?**

- (A) 30

- (B) 40

- (C) 45

- (D) 90

**9. Three pipes A, B and C can fill a tank in 6 hrs. After working at it together for 2 hrs, C is closed and A & B can fill the remaining part in 7 hrs. The number of hours taken by C alone to fill the cistern is**

- (A) 10
hrs

- (B) 12 hrs

- (C) 14 hrs

- (D) 16 hrs

**10. A pipe can fill a tank in 16 min and another can empty it in 8 min. If the tank is already half full and both the tapes are opened together, the tank will be**

- (A) Filled in 12
min

- (B) Emptied in
12 min

- (C) Filled in 8
min

- (D) Emptied in 8
min

**11. A cistern can fill in 9 hrs but it takes 10 hrs due to a leak in its bottom. If the cistern is full, then the time that the leak will take to empty it is?**

- (A) 60 hrs

- (B) 70 hrs

- (C) 80 hrs

- (D) 90 hrs

**12. A cistern is normally filled in 8 hrs, but takes 2 hrs longer to fill because of a leak in its bottom. If the cistern is full, the leak will empty the cistern in**

- (A) 40 hrs

- (B) 35 hrs

- (C) 45 hrs

- (D) 60 hrs

**13. Three taps A, B and C can fill a tank in 12, 15 and 20 hours respectively. If A is open all the time and B and C are open for one hour each alternately, the tank will be full in:**

- (A) 6 hours

- (B) 6

^{2}/

_{3}hours

- (C) 7 hours

- (D) 7½ hours

**14. Pipes A and B can fill a tank in 5 and 6 hours respectively. Pipe C can empty it in 12 hours. If all the three pipes are opened together, then the tank will be filled in:**

- (A) 1

^{13}/

_{17}hours

- (B) 2

^{8}/

_{11}hours

- (C) 3

^{9}/

_{17}hours

- (D) 4

^{1}/

_{2}hours

**15. A pump can fill a tank with water in 2 hours. Because of a leak, it took 2**

^{1}/_{3}hours to fill the tank. The leak can drain all the water of the tank in:- (A) 4

^{1}/

_{3}hours

- (B) 7 hours

- (C) 8 hours

- (D) 14 hours

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**Pipes and Cisterns: Next Tests**