The time, t, required to empty a tank is inversely
Chapter 7, Problem 7.5.8(choose chapter or problem)
The time, t, required to empty a tank is inversely proportional to r, the rate of pumping. If a pump can empty the tank in 30 minutes at a pumping rate of 50 gallons per minute, how long will it take to empty the tank if the pumping rate is doubled?
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