SOLUTION: In the lab, Elsa has two solutions that contain alcohol and is mixing them with each other. She uses 100 milliliters less of Solution A than Solution B. Solution A is 10% alcohol

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Question 994221: In the lab, Elsa has two solutions that contain alcohol and is mixing them with each other. She uses
100 milliliters less of Solution A than Solution B. Solution A is 10% alcohol and Solution B is 13%
alcohol. How many milliliters of Solution B does she use, if the resulting mixture has
82 milliliters of pure alcohol?

Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
a, volume in milliliters of solution A 10%
b, volume of solution B 13%
a=b-100

Amount of Alcohol: %280.10%29%2A%28b-100%29%2B%280.13%29%2Ab=82.

10%28b-100%29%2B13%2Ab=8200
10b-1000%2B13b=8200
23b=9200
b=9200%2F23

highlight%28b=400%29, milliliters volume of solution B