How many gallons of 40 percent alcohol solution must be mixed with 70 percent solution to obtain 30 gallons of a 52 percent alcohol solution?

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- January 28th 2010, 05:33 PM #1

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- January 28th 2010, 06:36 PM #2

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## math help

posted by apple 2009

alcohol mix

1 set up an equation in x as thelean fraction and 30-x the rich fraction. The sum of the alc in each fraction in terms of x = 30 times .52

2 use the lever principle

52-40= 12 the rich fraction

70-52= 18 the lean fraction

This is your answer . Your equation must get the same result

bjh