SOLUTION: how do you find the answer to this word problem?: how much water needs to be removed from 20 gallons of a 30 percent salt solution to change it to a 40 percent salt solution?

SOLUTION: how do you find the answer to this word problem?: how much water needs to be removed from 20 gallons of a 30 percent salt solution to change it to a 40 percent salt solution?

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Question 528439: how do you find the answer to this word problem?:
how much water needs to be removed from 20 gallons of a 30 percent salt solution to change it to a 40 percent salt solution?
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
(30%)(20) = (40%)(20 - x)
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