來,做數學題

everyday  a commuter takes a train that arrives at her station at precisely 6pm. She is met at the station by her hu*****and, who also arrives at precisely 6pm. He always drives the same route to the station and never varies his speed. One day the commuter takes an earlier train and arrives at the station at precisely 5pm. She decides to begin walking home along her hu*****and's usual route. They meet, she gets into the car, and they drive home. They arrive home precisely 10 mins earlier than usual . How long had the commuter been walking?

所有跟帖： 

• 動腦會預防老年癡呆。。。。釣魚就不會。 -lilipp- ♀ (0 bytes) () 04/13/2012 postreply 19:49:52

• 我小時候特怕：火車追火車，水缸灌水之類的應用題，繞了我吧 :) -xiaoyuzi- ♀ (0 bytes) () 04/13/2012 postreply 19:10:35

• 嘿嘿。。。還有兩個人一起走，一前一後。。。 -lilipp- ♀ (0 bytes) () 04/13/2012 postreply 19:33:20

• 我自己也不明白 -xiaoyuzi- ♀ (60 bytes) () 04/13/2012 postreply 19:35:51

• 那我就是文科生的敗類。。。。;p -lilipp- ♀ (0 bytes) () 04/13/2012 postreply 19:38:04

• 條件夠了。。。能做出來。 -lilipp- ♀ (0 bytes) () 04/13/2012 postreply 19:37:22

• 求教授評彈。。。 -lilipp- ♀ (0 bytes) () 04/13/2012 postreply 19:39:14

• 小豆跟司馬南一樣，一下就把教授給賣了。。 -lilipp- ♀ (0 bytes) () 04/13/2012 postreply 19:55:13

• 5 mins of driving distance -FHZM- ♂ (0 bytes) () 04/13/2012 postreply 19:13:04

• how long had she been walking? -lilipp- ♀ (26 bytes) () 04/13/2012 postreply 19:31:40

• 60-10/2=55 -FHZM- ♂ (0 bytes) () 04/13/2012 postreply 20:35:03

• 她在路上有豔遇嗎？沒有就沒法算了 -mknc- ♂ (0 bytes) () 04/13/2012 postreply 19:13:40

• 哈哈～～ -xiaoyuzi- ♀ (0 bytes) () 04/13/2012 postreply 19:16:48

• 你就是老師們說的，非三好學生 -lilipp- ♀ (0 bytes) () 04/13/2012 postreply 19:40:25

• 俺是三好學生 -mknc- ♂ (29 bytes) () 04/13/2012 postreply 19:45:07

• 三好一小。。 -lilipp- ♀ (17 bytes) () 04/13/2012 postreply 20:46:50

• 瀝瀝皮沒事做數學題，難道哈佛沒有其他的 -happychoir- ♀ (15 bytes) () 04/13/2012 postreply 19:19:08

• 沒了，周五就這點樂趣。。。嗬嗬 -lilipp- ♀ (0 bytes) () 04/13/2012 postreply 19:32:18

• LILI什麽意思，周五了給同學們攪腦子 -aChineseBostonian- ♂ (47 bytes) () 04/13/2012 postreply 19:24:50

• 快上吧，我一會出去就看不到啦 -xiaoyuzi- ♀ (0 bytes) () 04/13/2012 postreply 19:25:39

• 嗬嗬，快上。 -lilipp- ♀ (0 bytes) () 04/13/2012 postreply 19:31:16

• 再想想，好像不對。 -lilipp- ♀ (0 bytes) () 04/13/2012 postreply 19:32:37

• 回複：55 分鍾 -lilipp- ♀ (23 bytes) () 04/13/2012 postreply 20:03:27

• 再給你做一個 -lilipp- ♀ (66 bytes) () 04/13/2012 postreply 20:07:53

• Red star over china -FHZM- ♂ (0 bytes) () 04/13/2012 postreply 20:36:47

• 黑，小方不錯阿，專業的吧？：） -lilipp- ♀ (0 bytes) () 04/13/2012 postreply 20:41:20

• 理科的碩士博士生們，這個小學生的數學題哦。。。 -lilipp- ♀ (53 bytes) () 04/13/2012 postreply 19:52:43

• 55分鍾啦 -I751- ♂ (70 bytes) () 04/13/2012 postreply 20:23:08

• 答案 -lilipp- ♀ (354 bytes) () 04/13/2012 postreply 20:30:25

• 可憐的老婆,走了55分鍾路 -野生動物攝影家- ♂ (0 bytes) () 04/13/2012 postreply 20:33:52

• 野總這樣憐香惜玉的一般不會做這樣的題，舍不得。LOL -lilipp- ♀ (0 bytes) () 04/13/2012 postreply 20:37:55

• 為了鍛煉身體？還是沒有手機？每天下午30邁的速度開65分鍾真夠煩的。 -fouquets- ♂ (0 bytes) () 04/14/2012 postreply 07:13:57

• 回複：答案 -lilipp- ♀ (210 bytes) () 04/13/2012 postreply 20:35:26