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Taps A and B can fill a tank full in 3 h...

Taps A and B can fill a tank full in 3 hours. Tap B alone can fill the empty tank in 2 hours. How long will tap A take to vacate the tank if it is 25% filled.

A

1.5 hours

B

2 hours

C

2.5 hours

D

3.2 hours

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