SOLUTION: In the lab, Raina has two solutions that contain alcohol and is mixing them with each other. Solution A is 10% alcohol and Solution B is 40% alcohol. She uses 200 milli

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Question 1093466: In the lab, Raina has two solutions that contain alcohol and is mixing them with each other. Solution A is
10%
alcohol and Solution B is
40%
alcohol. She uses
200
milliliters of Solution A. How many milliliters of Solution B does she use, if the resulting mixture is a
30%
alcohol solution?

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Solution A is 10% alcohol and Solution B is 40% alcohol.
She uses 200 milliliters of Solution A.
How many milliliters of Solution B does she use, if the resulting mixture is a 30% alcohol solution?
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Use x mls of 40%
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200*10 + x*40 = (200+x)*30