gwd 11 7

Isabella1006

Q7:

Before a certain tire is used, 40 percent of its total weight consists of tread.If during a lifetime of use, 50 percent, by weight, of the tire’s tread is lost and no other parts of the tire is lost, what per cent of the tire’s total remaining weight consists of the remaining tread?



A.55%

B.20%

C.25%

D.30%

E.35%

Answer: C
請問黃色部分該怎麼翻譯? 查過了沒人問這個問題

mermaid2011

If during a lifetime of use, 50 percent, by weight, of the tire

’s tread is lost and no other parts of the tire is lost, what per

cent of the tire’s total remaining weight consists of the

remaining tread

就是说，使用后，tire的螺纹会逐渐减少，螺纹减少的同时，轮胎也在减少

（很好理解嘛，磨损），问的是，剩下的螺纹占剩下的轮胎的百分之多少。