1.

 Three taps A, B and C can fill a tank in 20 and 24 minutes respectively and a waste pipe can empty 3 gallons per minute. All the three pipes working together can fill the tank in 15 minutes. The capac

A. 100 gallons
B. 120 gallons
C. 140 gallons
D. 160 gallons
Answer» C. 140 gallons


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