Pipe A can fill a tank in 3 h but there is a leakage also due to which it takes 3 5 h for the tank t...........

Quantitative Aptitude (CDS) Pipes&cistern

Pipe A can fill a tank in 3 h but there is a leakage also, due to which it takes 3.5 h for the tank to be filled. How much time will the leakage take in

emptying the tank, if the tank is filled initially?

21 h

20 h

18 h

10.5 h

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Explanation:

Time taken by pipe A = 3h
Due to leakage, time taken = 3.5 =35/10= −7/2
Here LCM of 3 and 7/2 is 21
Here 21 is full capacity of tank then due to leakage in 1 h tank filled by A = (7–6) = 1 part of 21
so Leakage takes 21 h.