If 10 ounces of a strong vinegar solution are diluted with 50 ounces of water to form a four-percent vinegar solution, what was the concentration of the original solution? Choose the correct answer.
A) 20%	B) 24%	C) 25%	D) 28%	E) 30%
Let x be the concentration of the original solution.   10x = 0.04(60)   x = 0.24   The answer is 24%.
<result>B</result>
If 10 ounces of a strong vinegar solution are diluted with 50 ounces of water to form a four-percent vinegar solution, what was the concentration of the original solution?