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A solution of 30 percent acid and a solution of 60 percent acid are to be mixed to produce 50 liters of 57 percent acid How many liters of each solution should be used?
Fittazjonez
t = number of liters of 30% acid solution
s = number of liters of 60% acid solution
t+s=57
.30t+.60s=.50*57
t=57-s
.30(57-s)+.60s=.50*57
.30*57 -.30s +.60s = .50*57
.30s = .50*57 - .30*57 = .20*57
s = .20*57/.30 = 38 liters of 30% solution
t = 57 - s = 57-38 = 19 liters of 60% solution
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