Mathematics, 17.01.2020 00:31, sierravick123owr441
The time t (in hours) that it takes a pump to empty a tank of water varies inversely with the pumping rate r (in gallons per hour). if it takes 9 hours to empty a tank of water when the pumping rate is 60 gallons per hour, how long does it take to empty the tank when the pumping rate is 180 gallons per hour?
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