Problema Solution
clear shine window cleaner is 12% alcohol and sun is 30% alcohol. how much of each should be used to make 90 oz. of a cleaner that is 20% alcohol?
Answer provided by our tutors
set up the equation:
0.12(x) + 0.3(90-x) = 0.2(90)
0.12x + 27 - 0.3x = 0.2(90)
-0.18x + 27 = 18
x=50
we will need to mix 50 oz of 12% alcohol and 40 oz of 30 % alcohol