Question 956136: How many liters of 50% alcohol solution and 20% alcohol solution must be mixed to obtain 18 liters of 30% alcohol? Show your work. Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! Do it like this one. Only the numbers are different.
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Amanda wants to make 8 gal. of a 20% saline solution by mixing together a 56%
saline solution and a 8% saline solution. How much of each solution must she
use?
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e = amount of 8%
f = amount of 56%
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e+ f = 8 (total solution)
8e + 56f = 20*8 (total saline)
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e+ f = 8
e + 7f = 20
------------ Subtract
-6f
= -12
f = 2
e = 6
