SOLUTION: One tap can fill a cistern in 2 hours and another empty the cistern in 3 hours.How long will they take to fill the cistern if both the taps are opened ?

Question 728854: One tap can fill a cistern in 2 hours and another empty the cistern in 3 hours.How long will they take to fill the cistern if both the taps are opened ?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Add the rate of filling and
subtract the rate of emptying
( 1 cistern filled / 2 hrs ) minus ( 1 cistern emptied / 3 hrs ) = ( 1 cistern filled / t hrs )

Multiply both sides by

It will take 6 hrs with both taps open

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