SOLUTION: how much water must be evaporated from 32 gallons of a 10% salt solution in order to obtain a 20% salt solution

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Question 901336: how much water must be evaporated from 32 gallons of a 10% salt solution in order to obtain a 20% salt solution
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
0.1*32=0.2*x
3.2=0.2x
x=16 new total amount
Remove 16
0.2*16=3.2
You want to double the concentration so you half the amount of water