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How long will two pipes together take to...

How long will two pipes together take to fill a cistern which they can separately fill in 20 and 25 minutes ?

A

`11(1)/(9)` min

B

`10(1)/(9)` min

C

`11(6)/(9)` min

D

`11(2)/(9)` min

Text Solution

Verified by Experts

The correct Answer is:
`11(1)/(9)` min
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S CHAND IIT JEE FOUNDATION-TIME AND WORK -Self Assessment Sheet - 13
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