2011 AMC 12A 第 3 题

Question

一个小洗发水瓶可装

35

毫升洗发水，而一个大瓶可装

500

毫升洗发水。Jasmine 想购买最少数量的小瓶，足以完全装满一个大瓶。她必须买多少瓶？

A small bottle of shampoo can hold

35

milliliters of shampoo, whereas a large bottle can hold

500

milliliters of shampoo. Jasmine wants to buy the minimum number of small bottles necessary to completely fill a large bottle. How many bottles must she buy?

11

12

13

14

15

答案：E

知识点：取整函数估算

难度评级：880

小提示：

计算

500

除以

35

Divide

500

by

35

大提示：

因为

14

瓶不够

500

，要把商向上取整

Since

14

bottles fall short of

500,

round the quotient up

解答：

十四瓶可装

14 \cdot 35 = 490

毫升，这还不够。十五瓶可装

15 \cdot 35 = 525

毫升，已经足够。

所以 Jasmine 需要

15

瓶。

因此，正确答案是 E。

Fourteen bottles hold

14 \cdot 35 = 490

milliliters, which is not enough. Fifteen bottles hold

15 \cdot 35 = 525

milliliters, which suffices.

So Jasmine needs

15

bottles.

Thus, the correct answer is E.

2011 AMC 12A 第 3 题

答案：E

难度评级：880

小提示：

大提示：

解答：

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