请教下,这个题目不用考虑两个车不同方向行驶的情况吗?

strongweak2 · 发表于 2015-8-21 23:00:38

While on straight, parallel tracks, train A and train B are traveling at different constant rates. If train A is currently 2 miles behind train B, how many minutes from now will train A be 4 miles behind train B?1. Three minutes ago, train A was 1 mile behind train B.2. Train A is traveling at 80 miles per hour, and train B is traveling at 100 miles per hour.

                                                Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
                                                Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
                                                BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
                                                EACH statement ALONE is sufficient.
                                                Statements (1) and (2) TOGETHER are NOT sufficient.

答案D,请教下,这个题目不用考虑两个车不同方向行驶的情况吗?谢谢

halhha · 发表于 2015-8-21 23:07:01

If train A is currently 2 miles behind train B

如果你是背向行驶，你不会说A是behind B,
为什么我这么肯定呢？因为如果你说A是behind B, 那我可以说 B 是 behind A啊是不是？这样题目看起来就很扯。。

strongweak2 · 发表于 2015-8-21 23:15:04

halhha 发表于 2015-8-21 23:07
If train A is currently 2 miles behind train B

如果你是背向行驶，你不会说A是behind B,

谢谢了

请教下,这个题目不用考虑两个车不同方向行驶的情况吗?

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