1995 AMC 12 第 4 题
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所有题目均经美国数学协会(MAA)官方合法授权使用。
4.
若 是 与 的乘积, 是 与 的乘积,且 是 与 的乘积,则
If is of is of and is of then
答案:B
小提示:
将 和 都表示成 的倍数
Express both and as multiples of
大提示:
先把百分数化为分数,再求
Convert the percentages to fractions before forming
解答:
有 ,且 。因此 。所以正确答案是 B。
We have and Hence Thus the correct answer is B.
其他年份的第 4 题
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