100+ Pipes and Cisterns Problems with Solutions Pdf - 1

Question: 1

Two pipes A and B can fill a tank is 15 minutes and 20 minutes respectively. Both the pipes are opened together but after 4 minutes, pipe A is turned off. What is the total time required to fill the tank?

(A) 10 min 20 sec

(B) 11 min 45 sec

(C) 12 min 30 sec

(D) 14 min 40 sec

Question: 2

A booster pump can be used for filling as well as for emptying a tank. The capacity of the tank is 2400 m³. The emptying capacity of the tank is 10 m³ per minute higher than its filling capacity and the pump needs 8 minutes lesser to empty the tank than it needs to fill it. What is the filling capacity of the pump?

(A) 50 m³ / min

(B) 60 m³ / min

(C) 72 m³ / min

(D) 82 m³ / min

Question: 3

The petrol tank of an automobile can hold g litres. If a litres was removed when the tank was full, what part of the full tank was removed?

(A) g - a

(B) $${g}/{a}$$

(C) $${a}/{g}$$

(D) $${g - a}/{a}$$

Question: 4

Two pipes A and B together can fill a cistern in 4 hours. Had they been opened separately, then B would have taken 6 hours more than A to fill the cistern. How much time will be taken by A to fill the cistern separately?

(A) 1 hr

(B) 2 hrs

(C) 6 hrs

(D) 8 hrs

Question: 5

Pipe A can fill a tank in 30 hours and pipe B in 45 hours. If both the pipes are opened in an empty tank, how long much time will they take to fill it?

(A) 16 hours

(B) 18 hours

(C) 19 hours

(D) 20 hours