Posted by Chanelle on Tuesday, January 29, 2013 at 11:36am.
work with the amount of alcohol in each part. It has to add up to the total alcohol.
.25x + .75(90-x) = .60(90)
x = 27
so, 27 qt @ 25% and 63 qt @ 75%
Thank you,and how did you get come up with the equation?
Thank you,and how did set up the equation?
If you let x be the amount of 25% solution, then .25x is the amount of alcohol in that solutions.
Since there are 90 qts in all, 90-x is the amount of the 75% solution. .75(90-x) is the amount of alcohol in that solution.
Add up the two amounts of alcohol, and it must equal the amount of alcohol in 90 qts of 60% solution.
Ta-daa
Thanks
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