Home
Class 14
MATHS
Two pipes P and Q can fill a cistern in ...

Two pipes P and Q can fill a cistern in 15 minutes and 20 minutes respectively. Both are opened together, but at the end of 5 minutes, the pipe P is turned off. How long will the pipe Q take to fill the cistern ?

A

`8frac(1)(4)min`

B

`8frac(3)(4)min`

C

5 min

D

`8frac(1)(2)min

Text Solution

Verified by Experts

Promotional Banner

Similar Questions

Explore conceptually related problems

Two pipes, P and g can fill a cistern in 12 and 15 minutes respectively. If both are opened together and at the end of 3 minutes, the first is closed, how much longer will the cistern take to fill?

Two pipes A and B can fill a tank in 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?

Two pipes P and Q can fill a cistern in 12 and 15 min, respectively. If both are opened together and at the end of 3 min, the first is closed. How much longer will the cistern take to fill?