SOLUTION: help I need help solving this word problem a chemist has two solutions of h2so4. one has 40% concentration and the other has a 25% concentration. how many liters of solution

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Question 861715: help I need help solving this word problem


a chemist has two solutions of h2so4. one has 40% concentration and the other has a 25% concentration. how many liters of solution must be mixed to obtain 58 liters of a 30% solution?
Found 2 solutions by josgarithmetic, richwmiller:
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Can percent weight per weight be assumed? Densities?

Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
.4*a+.25b=58*.3,
a+b=58
a=19 1/3 b=38 2/3