SOLUTION: The doctor wants 750 ml of a 45% solution. Today you have a 50% solution and a 10% solution. How much of each would you use?

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Question 701114:

The doctor wants 750 ml of a 45% solution. Today you have a 50% solution and a 10% solution. How much of each would you use?
Answer by checkley79(3341) About Me  (Show Source):
You can put this solution on YOUR website!
.50X+.10(750-X)=.45*750
.50X+75-.10X=337.5
.40X=337.5-75
.40X=262.5
X=262.5/.40
X=656.25 ML OF THE 50% SOLUTION IS USED.
.50*656.25+.10(750-656.25)=337.5
328.125+.10*93.75=337.5
328.125+9.375=337.5
337.5=337.5