1986 AMC 8 第 10 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。
10.
一幅宽 英尺的画挂在一面宽 英尺的墙正中央。画最近的一边距离墙端多少英尺？
A picture feet across is hung in the center of a wall that is feet wide. How many feet from the end of the wall is the nearest edge of the picture?
答案：B
小提示：
画在正中央，所以两侧空隙相等
The picture is centered, so the two gaps on the sides are equal
大提示：
用墙宽减去画宽，再把剩余长度平均分到两侧
Subtract the picture width from the wall width, then split the remainder between the two sides
解答：
画留下 英尺的墙面，平均分成两侧各 英尺的空隙。所以画最近的一边离墙端 英尺。
所以正确答案是 B。
The picture leaves feet of wall, split equally into two gaps of feet each. So the nearest edge of the picture is feet from the end of the wall.
Thus, the correct answer is B .
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