2003 AMC 12B 第 2 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。
2.
Al 得了 algebritis，必须连续两周每天服用一粒绿色药丸和一粒粉色药丸。绿色药丸比粉色药丸贵 ，这两周的药丸总费用为 。一粒绿色药丸多少钱？
Al gets the disease algebritis and must take one green pill and one pink pill each day for two weeks. A green pill costs more than a pink pill, and Al’s pills cost a total of for the two weeks. How much does one green pill cost?
小提示：
两周是 天，所以先求一天一对药丸的费用
Two weeks is days, so find the cost of one day’s pair of pills first
大提示：
若绿色药丸价格为 ，则粉色药丸价格为 ，且 是一天的费用
If a green pill costs then the pink pill costs and is one day’s cost
解答：
共 天，两粒药丸的每日费用为
设一粒绿色药丸价格为 。粉色药丸价格为 ，所以 解得 。
因此，正确答案是 D。
Over days the daily cost of the two pills is
Let be the cost of a green pill. The pink pill costs so giving
Thus, the correct answer is D.
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