SOLUTION: The time it takes to fill a fish tank depends upon the rate at which the water is flowing. It takes 49 minutes to fill the fish tank at the rate of 3 gallons per minute. How many

Question 863700: The time it takes to fill a fish tank depends upon the rate at which the water is flowing. It takes 49 minutes to fill the fish tank at the rate of 3 gallons per minute. How many minutes will it take to fill the fish tank at the rate of 4 gallons per minute?
The answer is supposed to be 30, but I do not understand how they got that.
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
.

The idea is R*t=v Rate, time, volume. Your units are gallons per minute, minutes, and gallons.

The question becomes, .
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