A water tank can be filled by a tap in 30 minutes and another tap can fill it in

Question

A water tank can be filled by a tap in 30 minutes and another tap can fill it in 60 minutes. If both taps are kept open for 5 minutes and then the first tap is closed, how long will it take foe the tank to be filled ?

Options:

A . 20 minutes

B . 25 minutes

C . 30 minutes

D . 45 minutes

Answer: Option D

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