Two pipes A and B can fill a tank in 20 and 30 hours respectively. Both the pipe

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Two pipes A and B can fill a tank in 20 and 30 hours respectively. Both the pipes are opened to fill the tank but when the tank is one - third full, a leak develops in the tank through which one - third water supplied by both the pipes gose out. The total time taken to fill the tank is?

Options:

A . 12 hours

B . 14 hours

C . 16 hours

D . 18 hours

Answer: Option C

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