Two pipe s A and B can fill a tank in 10 minutes and 15 minutes respective

Question

Two pipe s A and B can fill a tank in 10 minutes and 15 minutes respectively . If both the tape are opened simultaneously , and the tap A is close after 4 minutes , then how much more time will it take to fill the tank by tape B ?

Options:

A . 3 min.

B . 4 min.

C . 5 min.

D . 6 min.

Answer: Option C

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