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.
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?
2 answers
x = 420
1 answer