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Two pipes, P and Q can fill a cistern in...

Two pipes, P and Q can fill a cistern in 12 and 15 minutes respectively. Both are opened together, but at the end of 3 minutes, P is turned off. In how many more minutes will q fill the cistern?

A

7

B

7(1/2)

C

8

D

8(1/4)

Text Solution

Verified by Experts

The correct Answer is:
D
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