Question

A cistern can be filled by one tap in 4 hours and another tap in 6 hours. How long will it take to fill the cistern if both taps are opened together?​

Answer 1

Answer:

cistern filled in 1 hour by first tap=1/4

cistern filled in1 hour by second tap=1/6

cistern filled by when both taps are opened=1/4+1/6

=3+2/12=5/12

full cistern will be filled in 12/5 hours. _answer...

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