[讨论]07年3月MathJJ讨论稿第1篇3.09-13:00 1-98

rochenemyhe

第四题为何是选b呢??

游游远方

LZ是可爱+可敬的人！攒一个

tonyyuan

盼复

tonyyuan

对,谢谢!

[此贴子已经被作者于2007-3-20 17:46:27编辑过]

dreamalittle

以下是引用ghostzpy在2007-3-15 23:50:00的发言：

98题貌似二月的一道机经:

295.DS:Tom is working, his pay (P) structure is simplified according to how many hours he worked each week:
P=$300 (work T<10 hour)
P=$200+$10 * T (work 11<=T<20 hours)
P=$20*T (work T>=20 hours)
Ask, how many hour did he work on 2nd week?
1) he work 2 more hours on 2nd week than 1st week;
2) he get $20 more than for on 2nd week than 1st week; (数据基本正确)

E, 1)+2)只能保证工作时间在11～20这个区间内，不能得到具体数字

有道理，好像符合OG上的思路