Free Test Pipes and Cisterns – General...

Q1: A pipe can fill a tank in 6 hours. Another pipe can fill it in 4 hours. How long will it take to fill the tank if both pipes are opened together?

A. 2.4 hours B. 3.5 hours C. 5 hours D. 6 hours

Q2: A pipe can fill a tank in 8 hours while another can empty it in 4 hours. If both are opened together, how much time will it take to fill the tank?

A. Never fills B. 8 hours C. 12 hours D. 16 hours

Q3: Pipe A can fill a tank in 10 hours. Pipe B can fill the same tank in 15 hours. How long will both take to fill the tank together?

A. 6 hours B. 5 hours C. 8 hours D. 9 hours

Q4: Pipe A can fill a tank in 12 hours. Pipe B can empty it in 6 hours. If both are opened, how long will it take to fill the tank?

A. 24 hours B. 12 hours C. Never fills D. 18 hours

Q5: A pipe fills 1/3 of a tank in 1 hour. How much time will it take to fill the tank?

A. 2 hours B. 3 hours C. 1 hour D. 4 hours

Q6: Pipe A fills a tank in 5 hours. Pipe B fills it in 10 hours. Pipe C empties it in 15 hours. If all are opened together, how long will it take to fill the tank?

A. 6 hours B. 7.5 hours C. 5 hours D. 4.29 hours

Q7: Pipe A fills a tank in 3 hours and Pipe B fills it in 6 hours. They are opened alternatively for 1 hour each, starting with A. In how many hours will the tank be full?

A. 3.5 hours B. 4 hours C. 5 hours D. 4.5 hours

Q8: Two pipes fill a tank in 12 and 15 hours. When opened together, due to a leak, the tank is filled in 20 hours. How long would the leak take to empty the tank?

A. 10 hours B. 20 hours C. 30 hours D. 60 hours

Q9: A pipe fills 3/5 of a tank in 9 minutes. How much more time to fill the tank?

A. 3 mins B. 4 mins C. 5 mins D. 6 mins

Q10: A tank is filled by a pipe in 10 hours and emptied by a second pipe in 30 hours. Both are opened. Find the time to fill the tank.

A. 15 hours B. 20 hours C. 25 hours D. 30 hours

Q11: Three pipes A, B, and C can fill a tank in 20, 30, and 40 hours respectively. All opened together. How long to fill the tank?

A. 10 hours B. 8 hours C. 12 hours D. 7.5 hours

Q12: Pipe A can fill a tank in 24 min and Pipe B in 32 min. When should Pipe B be closed to fill the tank in 18 min?

A. 8 min B. 10 min C. 12 min D. 14 min

Q13: A pipe fills a tank in 40 min, another empties it in 60 min. Both are opened. Time to fill tank?

A. 120 min B. 100 min C. 80 min D. 60 min

Q14: Pipe A can fill 2/3rd of a tank in 1 hour. How long to fill whole tank?

A. 1.5 hr B. 2 hr C. 1 hr D. 2.5 hr

Q15: A tank is filled by three pipes A, B, and C in 12, 15, and 20 hours respectively. Time to fill together?

A. 5 hr B. 4 hr C. 6 hr D. 3.5 hr

Q16: A pipe fills 1/2 of tank in 3 minutes. Time to fill full tank?

A. 6 min B. 5 min C. 3 min D. 9 min

Q17: Pipe A fills tank in 18 hrs, Pipe B fills in 12 hrs. Both open for 6 hrs. What part is filled?

A. 1/2 B. 3/4 C. 2/3 D. 5/6

Q18: Pipe A can fill a tank in 5 hrs. Pipe B can empty in 6 hrs. Net rate if both open?

A. 1/30 B. 1/10 C. 1/15 D. 1/60

Q19: One pipe fills 1/4 in 1 hour. Another fills 1/3 in 1 hour. Together?

A. 7/12 per hour B. 1 per hour C. 2/3 per hour D. 5/6 per hour

Q20: Pipe fills tank in 15 min. A leak empties it in 45 min. Net time to fill?

A. 22.5 min B. 30 min C. 45 min D. 15 min

Quiz for Pipes and Cisterns