Chris needs to make 500 L of a 35% acidic solution. He has only two of the acidic solutions available, a 25% solution and a 50% solution. How many litres of each acidic solution should he mix?

Answer 1

amount needed of the 25% stuff --- x L
amount needed of the 50% stuff ---- 500-x L

.25x + .50(500-x) = .35(500)
times 100
25x + 50(500-x) = 35(500)
25x + 25000 - 50x = 17500
-25x = -7500
x = 300 L

state your conclusion

Answer 2

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