作者voices (总是昏睡中~)
看板GRE_Verbal
标题Re: [请教] M3的数学一题
时间Tue Jun 5 00:28:52 2007
我也适用排列组合的算法 (你的是M2的考题)
不过我要问的是17题
17.An airline passenger is planning a trip that involves three connecting
flights that leave from Airports A, B, C, respectively. The first flight
leaves Airport A every hour, beginning at 8:00 a.m., and arrives at Airport
B 5/2 hours later. The second flight leaves Airport B every 20 minutes,
beginning at 8:00 a.m., and arrives at Airport C 7/6 hours later. The third
flight leaves Airport C every hour, beginning at 8:45 a.m. What is the least
total amount of time the passenger must spend between flights if all flights
keep to their schedules?
A.25 min B.1 hr 5 min C.1 hr 15 min D.2 hr 20min E.3 hr 40 min
Ans:B
不知道是不是又是我误解题目的意思>"<
A到B的时间+B到C的时间已经超过3小时了
为什麽可以在1 hr 5 min跑完三个机场(．＿．?)
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※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 140.114.192.134
1F：推 arabesque:total amount of time the passenger 219.68.90.66 06/05 00:36
2F：→ arabesque:must spend between flights 219.68.90.66 06/05 00:36
3F：→ arabesque:A 8:00 -> B 10:30 B 10:40 -> C 11:50 219.68.90.66 06/05 00:36
4F：→ arabesque:C 12:45 b等10分 c等55分 -> 1h5min 219.68.90.66 06/05 00:38
5F：→ voices:谢谢 原来是我没看清楚题目 囧140.114.192.134 06/05 00:44