Question

一幅宽 $3$ 英尺的画挂在一面宽 $19$ 英尺的墙正中央。画最近的一边距离墙端多少英尺？

A picture $3$ feet across is hung in the center of a wall that is $19$ feet wide. How many feet from the end of the wall is the nearest edge of the picture?

$1\dfrac12$

$8$

$9\dfrac12$

$16$

$22$

答案：B

知识点：对称性

难度评级：730

解答：

画留下 $19 - 3 = 16$ 英尺的墙面，平均分成两侧各 $8$ 英尺的空隙。所以画最近的一边离墙端 $8$ 英尺。

所以正确答案是 B。

The picture leaves $19 - 3 = 16$ feet of wall, split equally into two gaps of $8$ feet each. So the nearest edge of the picture is $8$ feet from the end of the wall.

Thus, the correct answer is B .

1986 AMC 8 第 10 题

答案：B

难度评级：730

解答：

其他年份的第 10 题