SOLUTION: how much of a 15% solution must be added to 60ml of a 50% alcohol solution to get a 40% solution?

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Question 765884: how much of a 15% solution must be added to 60ml of a 50% alcohol solution to get a 40% solution?
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
how much of a 15% solution must be added to 60ml of a 50% alcohol solution to get a 40% solution?
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let x=amount of 15% to add
15%x+50%*60=40%(x+60)
.15x+30=.4x+24
.25x=6
x=24
amount of 15% to add=24 ml