Management Aptitude Test Dec 2012 Paper

Question : 113 of 200

Marks: +1, -0

To fill a certain tank, pipes A, B and C take 20 min, 15 min and 12 min, respectively. If the three pipes are opened every alternate minute, how long will it take to fill the tank?

5 min
10 mim
12 min
15 min

Validate

Solution:

(d) Part of tank filled in 3 min =

1/20+1/15+1/12=1/5

Thus, tank will be filled in 3 x 5 = 15 min

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