SOLUTION: in the lab, Linda has two solutions that contain alcohol and is mixing them with each other. she uses twice as much solutions a as solution b. solution a is 10% alcohol and solutio
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Question 1053126: in the lab, Linda has two solutions that contain alcohol and is mixing them with each other. she uses twice as much solutions a as solution b. solution a is 10% alcohol and solution b is 15% alcohol. how many milliliters of solution b does she use if the resulting mixture has 70 milliliters of pure alcohol? Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = ml of solution A used
Let = ml of solution B used
---------------------------------
(1)
(2)
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Plug (2) into (1)
(1)
(1)
(1)
(1)
She uses 200 ml of solution B
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check:
(2)
(2)
(2) ml
and
(1)
(1)
(1)
(1)
(1) ml
OK
