The price of an article of clothing was reduced from $25 to $20. The reduced price of the article was then increased by x percent to return it to $ 25. Column A Column B x 20 A．if the quantity in Column A is greater B．if the quantity in Column B is greater C．if the two quantity are equal D．if the relationship cannot be determined from the information given
A.if B.if C.if D.if
【参考答案】
A 解析：一件衣服的价格从$25降到$20，减价后衣服的价钱又涨了x％，该衣服的价格升至原价$25。 解：本题的正确为(A)。由题意可列出下面的方程：$20(1+x％)=$25 => x=25