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

Algebra ->  Real-numbers -> 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      Log On


   

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) About Me  (Show Source):
You can put this solution on YOUR website!
49%28min%29%2A3%28gal%2Fmin%29=147+gallons.

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

The question becomes, highlight%283%2At=147%29.