Tap A can fill the tank in 40 minutes and Tap B can empty the tank in 60 minutes. If both the taps are opened at the same time then what is the time taken to fill the tank ?
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tap A can fill the tank = 40 min
tap B can fill the tank= 60min
40-60 = 20
answer =20
tap B can fill the tank= 60min
40-60 = 20
answer =20
moumita1980:
thanks
but the question is tap B can empty the tank in 60 min
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