SOLUTION: In what ratio should a 20% methyl alcohol solution be mixed with a 50% methyl alcohol solution so that the resultant solution has 40% methyl alcohol in it?
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Question 286498: In what ratio should a 20% methyl alcohol solution be mixed with a 50% methyl alcohol solution so that the resultant solution has 40% methyl alcohol in it? Answer by richwmiller(17219) (Show Source):
You can put this solution on YOUR website! you are mixing two solutions to get a third.
so a+b=c
we don't know how much to mix nor how much we will end up with.
so we call the amount to mix x and y and the total will of course be x+y
.2x+.5y=.4(x+y)
2x+5y=4(x+y)
2x+5y=4x+4y
2x+y=4x
y=2x
so you will mix 2x for every y
y/x=2
x/y=1/2
