Question

A 30-ounce solution is 20% alcohol. If 70 ounces of water are added to it, what percent of the new solution is alcohol?
6%
12%
20%
30%

Answer 1

30 + 70 = 100 oz
0.2 * 30 = 6
6 / 100 * 100 = 3 / 50 = 0.06 = 6%