If 12 ounces of a strong vinegar solution are diluted with 48 ounces of water to form a three-percent vinegar solution, what was the concentration of the original solution?
Choose the correct choice from the following.
A) 15%  B) 18%  C) 20%  D) 21%  E) 24%
Let x be the concentration of the original solution.   12x = 0.03(60)   x = 0.15   The answer is 15%.
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If 12 ounces of a strong vinegar solution are diluted with 48 ounces of water to form a three-percent vinegar solution, what was the concentration of the original solution?