HMMT 二月 2000 · GEN 赛 · 第 3 题
HMMT February 2000 — GEN Round — Problem 3
题目详情
英文原题
- A t w elv e fo ot tree asts a v e fo ot shado w. Ho w long is Henry's shado w (at the sametime of da y) if he is v e and a half feet tall?
解析
英文解析
- Let x be the length of Henry's shado w in feet. Using similar triangles, we nd that
5 : 5 x 5 : 5 1155 = , so x = 5 = 5 = .
12 5 12 24
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