Problema Solution
how much water must be added to 300 liter of a solution so that it consistacy may change 25% to 20%?
Answer provided by our tutors
let 'x' represent the amount of pure water that is added, then '300+x' represents the total amount of solution
express the relationship in this equation:
0.20(300+x) = x + 0.25(300)
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x=-18.75
So add 18.75 gallons of pure water.