SOLUTION: how much water must be evaporated from 240 gallons of a 3% salt solution to produce a5% salt solution?

Algebra ->  College  -> Linear Algebra -> SOLUTION: how much water must be evaporated from 240 gallons of a 3% salt solution to produce a5% salt solution?      Log On


   



Question 147497This question is from textbook college algebra
: how much water must be evaporated from 240 gallons of a 3% salt solution to produce a5% salt solution? This question is from textbook college algebra

Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
how much water must be evaporated from 240 gallons of a 3% salt solution to produce a 5% salt solution?
.
First, we can find out how much salt by:
.03(240) = 7.2 gallons
.
Let x = gallons of water to make it a 5% solution
then
.05 = 7.2/x
x = 7.2/.05
x = 144 gallons
.
therefore, the amount of water that must be evaporated is:
240 - 144 = 96 gallons of water