#### Question

a.

10 min. 20 sec.

b.

11 min. 45 sec.

c.

12 min. 30 sec.

d.

14 min. 40 sec.

Posted under Pipes and Cisterns Aptitude

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###### Q. Two pipes A and B can fill a tank in 15 minutes and 20 minutes respectively. Both the pipes are opened together but after 4 minutes, pipe A is turned off. What is the total time...

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