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A tap can fill a tank in 15 minutes and another can empty it in 8 minutes, If the tank is already half full and both taps are opened together, the tank will be:

A. filed in 12 min
B. emptied in 12 min
C. filled in 8 min
D. emptied in 8 min
E. None of them
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সঠিক উত্তরঃ D. emptied in 8 min
Explanation: