標題: 数学题(英文) [打印本頁]

---

作者: nelston    時間: 2007-9-11 08:17 PM     標題: 数学题(英文)

a class total gt 48 ppl.9 m9 l  F+ ]! ]$ r4 ~
6 ppl din join any club
$ ~" Q' c3 Z, `' z2 u: W& Utvb now,tvbnow,bttvb1/4 of the student in de clas join badminton club n computer club.
! w2 S( w1 |2 X0 fthe number of badminton club member which is not computer club member is 2 times de member of computer club.
* `0 J4 D) Q' u7 d3 v* i公仔箱論壇how many ppl in de clas join badminton club???

---

作者: genzo2106    時間: 2007-9-12 01:49 PM

28 students are badminton club members only.( s1 y( \! n" O
公仔箱論壇. O+ \7 ^0 H  X1 D7 r7 O7 f
2 students are in computer club only.公仔箱論壇! x! X$ D/ S. S+ g! c. _
! Q  A8 @, \' K6 o
12 students are in both badminton and computer club.3 Z' y" o# w# K* \- s! M! x+ L

. t# q3 d. i. I4 etvb now,tvbnow,bttvbtherefore 28+2+12+6=48

---

作者: 00360353    時間: 2007-9-12 06:59 PM

har ???tvb now,tvbnow,bttvb2 `/ ~1 r5 O5 n& y$ ?/ I! J
48/4=12 ppl ...
! R. Z& r6 S7 q. Z' P2 p6 nbadmintion 2x = computer 1x
4 M  Z5 _  [" b4 K( J  H! d! _0 q% L& g公仔箱論壇then 12/3 x=4ppl
; c) G5 u+ x" D9 q4 |5.39.217.77badmintion 8 ppl ... computer 4 ppl

---

作者: dick007    時間: 2007-9-13 03:44 PM

28 students

---

歡迎光臨 公仔箱論壇 (http://5.39.217.77/)

Powered by Discuz! 7.0.0