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There are 4 filling pipes and 3 emptying...

There are 4 filling pipes and 3 emptying pipes capable of
filling and emptying in 12 minutes and 15 minutes
respectively. If all the pipes are opened thogether and as a
result they fill 10 litres of water per minute. Find the capacity
of the tank.

A

65 ltr

B

70 ltr

C

75 ltr

D

80 ltr

Text Solution

Verified by Experts

The correct Answer is:
(c)
`(4/12 - 3/15) xx t=1`
`t = 15/2` minute - in this time the tank will be filled. So
the capacity `= (15/2)xx 10 = 75` litre
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