If 20 ounces of a strong vinegar solution are diluted with 60 ounces of water to form a six-percent vinegar solution, what was the concentration of the original solution? Choose one.
A) 15% B) 18% C) 20% D) 21% E) 24%
Let x be the concentration of the original solution.   20x = 0.06(80)   x = 0.24   The answer is 24%.
<result>E</result>
If 20 ounces of a strong vinegar solution are diluted with 60 ounces of water to form a six-percent vinegar solution, what was the concentration of the original solution?