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sergejj [24]
4 years ago
14

In the lab, Manuel has two solutions that contain alcohol and is mixing them with each other. Solution A is 50% alcohol and Solu

tion B is 10% alcohol. He uses 1200 milliliters of solution A. How many milliliters of Solution B does he use if the resulting mixture is a 40% alcohol solution?
Mathematics
1 answer:
IgorLugansk [536]4 years ago
4 0
Suppose he uses x mls of solution B.
0.5*1200 +0.1x=0.4(1200+x)
600+0.1x=480+0.4x
0.3x=120
x=400
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