RRB Paramedical Staff Nurse Model Paper 3

Question : 50 of 100

Marks: +1, -0

Two pipes can fill a cistern separately in 10 h and 15 h. They can together fill the cistern in

Solution:

Given, part of cistern filled by

A=10{h}

Part of a cistem filled by

B=15 h

Then, part of the cistem filled by both pipes in

1{h}

=\;{1}/{10}+\;{1}/{15}=\;{3+2}/{30}=\;{1}/{6}

So the cistern will be filled in 6 h

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