SOLUTION: if you boil 3 gal of 10% salt water until there are only 2 gal left, what is the percent of salt when you finish?

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Question 807254: if you boil 3 gal of 10% salt water until there are only 2 gal left, what is the percent of salt when you finish?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
if you boil 3 gal of 10% salt water until there are only 2 gal left,
what is the percent of salt when you finish?
:
the amount of salt remains the same only the per cent changes, therefore
let x = percent salt in the 2 gal that remain
10(3) = x(2)
30 = 2x
x = 15% now