题目

A pile of x bricks weighs 75 pounds. If each brick in the pile has the same weight and 3 bricks are removed from the pile, what is the weight of the remaining bricks?

选项

A.

B.

C.

D.

E.

解析

一堆共\( x \)块的砖重75磅。如果这堆砖里每块砖的重量都相同,且从这堆砖中取出了3块,那么剩下的砖重多少? **解答:** \( x \)块砖 = 75磅 取出3块后剩下的砖数 = \( (x-3) \)块 剩下的砖的重量 = \( (x - 3) \text{块} \times \frac{75 \text{磅}}{x \text{块}} \) \( = \frac{75(x-3)}{x} \text{磅} \) 答案:E
在线客服
官方微信
公众号