Two pipes can fill a tank in 40 and 48 minutes respectively and a waste pipe can

Question

Two pipes can fill a tank in 40 and 48 minutes respectively and a waste pipe can empty 3 gallons per minutes. All the three pipes working together can fill the tank in 30 minutes, The capacity of the tank is-

Options:

A . 60 gallons

B . 120 gallons

C . 180 gallons

D . 240 gallons

Answer: Option D

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