AMC8 1995

AMC8 1995 · Q7

AMC8 1995 · Q7. It mainly tests Fractions, Arithmetic misc.

At Clover View Junior High, one half of the students go home on the school bus. One fourth go home by automobile. One tenth go home on their bicycles. The rest walk home. What fractional part of the students walk home?

在 Clover View 初中，有一半学生乘坐校车回家。四分之一乘坐汽车回家。十分之一骑自行车回家。其余的学生步行回家。步行回家的学生占总数的几分之几？

(A) $\frac{1}{16}$ $\frac{1}{16}$

(B) $\frac{3}{20}$ $\frac{3}{20}$

(D) $\frac{17}{20}$ $\frac{17}{20}$

(E) $\frac{9}{10}$ $\frac{9}{10}$

Answer

Correct choice: (B)

正确答案：（B）

Solution

One half ($\frac{1}{2}$) go by bus, one fourth ($\frac{1}{4}$) by automobile, and one tenth ($\frac{1}{10}$) by bicycle. So $100\% - (50\% + 25\% + 10\%) = 15\%$ or $\frac{3}{20}$ walk home.

一半 ($\frac{1}{2}$) 乘坐校车，四分之一 ($\frac{1}{4}$) 乘坐汽车，十分之一 ($\frac{1}{10}$) 骑自行车。因此 $100\% - (50\% + 25\% + 10\%) = 15\%$ 或 $\frac{3}{20}$ 步行回家。

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