Question

18 pumps can empty a tank in 6 hours, in how many hours can 30 pumps do the same work?​

Answer 1

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Step-by-step explanation:

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Answer 2

Let us assume the volume of the reservoir is 1000 litres.

It is emptied in 24 hours

Therefore the rate of pumping= 1000/24=41.66 litres per hour

The individual pumping rate=41.66/15=2.77 litres per hour per pump

Now

We have 60 pumps

The cumulative pumping capacity= 166.64 litres per house

Therefore the time required to pump out 1000 litres= 6 hours.

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