Asked by Anonymous

A chemical manufacturer wishes to fill an order for 700 gallons of a 24% acid solution. Solutions of 20% and 30% are in stock.


How many gallons of 20% acid solution will be used in the desired mixture?
Answered by Reiny
amount of the 20% stuff ---- x gallons
amount of the other stuff ---- 700-x

.2x +.3(700-x) = .24(700)

solve for x to reveal the mystery.
Answered by Cali
x = 420
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