Pipe and Cistern

 Pipe and Cistern Practice Set

Q1) A tap can fill a tank in 6 hours . After half the tank is filled, 3 more similar taps are opened. What is the total time taken to fill the tank completely ?

A) 4 hours

B) 4 hours and 15 minutes

C) 3 hours and 15 minutes 

D) 3 hours and 45 minutes 

Option (D)

Q2) If 3/5th of a cistern is filled in 1 minute, the time needed to fill the rest of the tank is ?

A) 40 sec

B) 30 sec 

C) 36 sec

D) 24 sec

Option (A)

Q3) A cistern is normally filled in 6 hours but takes 3 hours longer to fill because of a leak in the bottom. If the cistern is full, the leak will empty it ?

A) 24 hrs

B) 18 hrs

C) 21 hrs 

D) 30 hrs

Option (B)

Q4 A tap can fill a cistern in 12 hours. After half the tank is filled, 2 more simillar taps are opened. What is the total time taken to fill the tank completly ?

A) 9 hrs

B) 8 hrs

C) 4 hrs

D) 6 hrs

Option (B)