If I have 16 ounces of 99% Alcohol mixed with 4 ounces of distilled water. What percentage of alcohol is in the 20 ounce bottle?
The amount of alcohol stays the same and it is
.99(16) ounces
= 15.84 ounces
so in 20 ounces the percentage of alcolhol
= 15.84/20 = .792 or 79.2%