SOLUTION: how much water must be added to 300 L of a solution so that its concentration may change from 25% to 20%?

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Question 503232: how much water must be added to 300 L of a solution so that its concentration may change from 25% to 20%?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Hint:
25% of 300 liters is 75 liters of product.
Add enough water that 75 liters is 20%.