Question

A tap can fill a cistern in 30 minutes.how long will it take to fill 3/4th of the cistern

Answer 1

Therefore 1 tap can fill half tank in 2 hours. 4 taps can fill the tank in 44=1 4 4 = 1 hour. Therefore 4 taps can fill half tank in 12 hour =30 minutes.

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Answer 2

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Tap can fill the cistern in 30 mins.

Part of cistern filled in one minute= 1/30

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