SOLUTION: A 40% salt solution and a 85% salt solution are combined yielding 30L of 70% salt solution . What are the respective volumes of the 40% and 85% solutions?

Question 721859: A 40% salt solution and a 85% salt solution are combined yielding 30L of 70% salt solution . What are the respective volumes of the 40% and 85% solutions?
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
A 40% salt solution and a 85% salt solution are combined yielding 30L of 70% salt solution . What are the respective volumes of the 40% and 85% solutions?
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let x=volume of 40% solution
30-x=volume of 85% solution
40%x+85%(30-x)=70%*30
.4x+25.5x-.85x=21
-.45x=4.5
x=10
30-x=20
volume of 40% solution=10 L
Volume of 85% solution=20 L
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