Asked by carry on

the lab keeps two acid solutions on hand. one is 20% and the other is 35%. how much 20% and how much 35% acid solution should be used to prepare 25 liters of a 26% solution?
Answered by carry on
Can someone help me solve this?
Answered by Reiny
volume of the 20% stuff ---- x L
volume of the 35% stuff ---- 25-x L

solve:

.2x + .35(25-x) = .26(25)
I suggest multiplying each term by 100 to clear the decimals.

carry on ...
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