SOLUTION: Clear Shine window cleaner is 12% alcohol and Sunstream window cleaner is 30% alcohol. How much of each should be used to make 90 oz. of a cleaner that is 20% alcohol?

Question 731246: Clear Shine window cleaner is 12% alcohol and Sunstream window cleaner is 30% alcohol. How much of each should be used to make 90 oz. of a cleaner that is 20% alcohol?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
L=12%
u=unknown amount of 12%
H=30%
v=unknown amount of 30%
T=20%, the percent wanted
M=90 ounces

SYSTEM:

Solve the system for u and v.

Substitute given values to compute u and v.
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