Question

Isabella 有一周时间为学校作业读完一本书。前三天她平均每天读 $36$ 页，接下来三天平均每天读 $44$ 页。最后一天她读了 $10$ 页读完这本书。这本书有多少页？

Isabella had a week to read a book for a school assignment. She read an average of $36$ pages per day for the first three days and an average of $44$ pages per day for the next three days. She then finished the book by reading $10$ pages on the last day. How many pages were in the book?

$240$

$250$

$260$

$270$

$280$

答案：B

知识点：平均数

难度评级：560

解答：

前三天 Isabella 读了 $36 \cdot 3 = 108$ 页。

接下来三天 Isabella 读了 $44 \cdot 3 = 132$ 页。

因此她一共读了 $108 + 132 + 10 = 250$ 页。

所以正确答案是 B。

During the first three days, Isabella read $36 \cdot 3 = 108$ pages.

During the next three days, Isabella read $44 \cdot 3 = 132$ pages.

Therefore, she read a total of $108 + 132 + 10 = 250$ pages.

Thus, B is the correct answer.

2014 AMC 8 第 3 题

答案：B

难度评级：560

解答：

其他年份的第 3 题