Two pipe A and B can fill a water tank in 20 and 24 minutes respectively and a t

Question

Two pipe A and B can fill a water tank in 20 and 24 minutes respectively and a third pipe C can empty at the rate of 3 gallons per minute. If A, B and C are open together to fill the tank in 15 minutes, find the capacity of tank?

Options:

A . 180 gallons

B . 150 gallons

C . 120 gallons

D . 60 gallons

Answer: Option C

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