Two taps can fill a tub in 5 min and 7 min respectively. A pipe can em – McqOptions

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1.	Two taps can fill a tub in 5 min and 7 min respectively. A pipe can empty it in 3 min. If all the three are kept open simultaneously, when will the tub be full?
A.	60 min
B.	105 min
C.	85 min
D.	90 min
Answer» C. 85 min

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