SOLUTION: How much water must be added to a 3oo litre solution to vary its concentration from 25% to 20%?

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Question 441627: How much water must be added to a 3oo litre solution to vary its concentration from 25% to 20%?
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
300x.25=75
75/.20=375
You must add 75 liters of water to thin the concentration from 25% to 20%..