A tank can be filled by two taps, A and B in 12 hours and 16 hours, respectively. The full tank can be emptied by a third tap C in 8 hours. If all the taps are turned on at the same time, then how much time I needed to fill the empty tank completely?

A tank can be filled by two taps, A and B in 12 hours and 16 hours, re

1.	A tank can be filled by two taps, A and B in 12 hours and 16 hours, respectively. The full tank can be emptied by a third tap C in 8 hours. If all the taps are turned on at the same time, then how much time I needed to fill the empty tank completely?
A.	16 hours
B.	40 hours
C.	48 hours
D.	24 hours
Answer» D. 24 hours

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A tank can be filled by two taps, A and B in 12 hours and 16 hours, respectively. The full tank can be emptied by a third tap C in 8 hours. If all the taps are turned on at the same time, then how much time I needed to fill the empty tank completely?

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