Question

翻译句子， 会做的请帮忙做做， 谢谢

on a car trip Sam drove m miles , Kara drove twice as many miles as Sam, and Darin drove 20 fewer miles than Kara, in the terms of m, how many miless did Darin drive?
A，2m+20
B, 2m-20
C, m/2 +20
D, (m+20)/2
E, m/2 -20
重点的怎么做。

Answer 1

这个很简单啦,翻译是,在一次驾车旅行当中,Sam开了M公里,Kara开了2M公里(是Sam的两倍),Darin比Kara少开了公里,问Darin开了多少公里..答案当然是B拉..因为Sam开了M公里,Kara开了2M,Darin开了比Kara少20，这就是2M-20啦,希望你喜欢罗-_-b

Answer 2

一个车程，Sam 开车开了 m 里，Kara 的距离则比Sam 远两倍， Darin 则比 Kara 短20 里。请问，以 m 来表示， Darin 共开了多远的车？

A，2m+20
B, 2m-20
C, m/2 +20
D, (m+20)/2
E, m/2 -20

答案应该是 B

Answer 3

选B
Kara drove twice as many miles as Sam, 得Kara 是2m
Darin drove 20 fewer miles than Kara 得Darin是2m-20