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In Mathematics / High School | 2014-05-19

A 12-gallon tub has a faucet that lets water in at a rate of 3 gallons per minute and a drain that lets water out at a rate of 1.5 gallons per minute. If you start with 3 gallons of water in the tub, how long will it take to fill the tub completely?

Asked by Karan313

Answer (2)

Vol of water required to fill up the tub = 12-3 = 9 Rate of water per min = 3 -1.5 = 1.5/min Using the formula vol = rt t = v/r t = 9/1.5 = 6 time taken = 6 mins

Answered by Poknoy | 2024-06-10

To fill the tub completely, starting with 3 gallons of water, will take 6 minutes. This is calculated by determining the net water flow rate and the remaining volume needed to fill the tub. The net flow rate is 1.5 gallons per minute, leading to a total time of 6 minutes for the remaining 9 gallons.
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Answered by Poknoy | 2024-12-24