SOLUTION: How much water must be evaporated from 240 gallons of a 3% salt solution to produce a 5% salt solution?

SOLUTION: How much water must be evaporated from 240 gallons of a 3% salt solution to produce a 5% salt solution?

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Question 63782: How much water must be evaporated from 240 gallons of a 3% salt solution to produce a 5% salt solution?
Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
THERE IS A TOTAL OF 240*.03=7.2 GALLONS OF SALT IN THE 240 GALLONS.
TO GET A 5% SOLUTION YOU MUST DRAIN ENOUGH TO GET LEAVE THE FOLLOWING
.05X=7.2
X=7.2/.05
X=144 GALLONS OF WASTER WITH 7.2 GALLONS OF SALT IS A 5% SOLUTION.
THEREFORE YOU MUST EVAPORATE
240-144=96 GALLONS OF WATER.
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