Question

$1861$ 年七月，印度乞拉朋齐降雨 $366$ 英寸。那个月平均每小时降雨多少英寸？

In July $1861,$ $366$ inches of rain fell in Cherrapunji, India. What was the average rainfall in inches per hour during that month?

$\dfrac{366}{31 \times 24}$

$\dfrac{366 \times 31}{24}$

$\dfrac{366 \times 24}{31}$

$\dfrac{31 \times 24}{366}$

$366 \times 31 \times 24$

答案：A

知识点：速率单位换算

难度评级：660

小提示：

平均速率等于总降雨量除以这个月的总小时数

The average rate is the total rainfall divided by the total number of hours in the month

大提示：

七月有 $31$ 天，每天有 $24$ 小时

July has $31$ days, and each day has $24$ hours

解答：

平均每小时降雨量等于总降雨量除以总小时数。七月有 $31$ 天，即 $31 \times 24$ 小时，所以平均值是 $\dfrac{366}{31 \times 24} = \dfrac{61}{124}$ 英寸每小时。

所以正确答案是 A。

The average rainfall per hour equals the total rainfall divided by the total number of hours. July has $31$ days, or $31 \times 24$ hours, so the average is $\dfrac{366}{31 \times 24} = \dfrac{61}{124}$ inches per hour.

Thus, the correct answer is A .

1986 AMC 8 第 1 题

答案：A

难度评级：660

小提示：

大提示：

解答：

其他年份的第 1 题