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?
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