a class total gt 48 ppl.tvb now,tvbnow,bttvb; t$ b+ K* P9 b( E" b9 \8 g& C
6 ppl din join any club ' y8 ?% u* L, l7 n% e- _1 ?# o1 jTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。1/4 of the student in de clas join badminton club n computer club.公仔箱論壇$ a. v. I, n; c3 }! w I" U% Y
the number of badminton club member which is not computer club member is 2 times de member of computer club.5.39.217.77:88989 Q! r8 s3 n; o% L# h, L
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. 4 r: ~* i7 d" l) Q, A7 B: |: B5.39.217.77:8898$ @( Q6 l, ~4 k' K4 ^! ~1 @2 R3 l8 v
2 students are in computer club only. ) z! V8 Y% q0 w- H' J4 T公仔箱論壇 9 h4 D4 n) w" v- x3 v, ^$ ?tvb now,tvbnow,bttvb12 students are in both badminton and computer club. 1 v5 h z3 F; e/ A' o0 e. _tvb now,tvbnow,bttvb. E- E2 L* k- U$ \6 V
therefore 28+2+12+6=48作者: 00360353 時間: 2007-9-12 06:59 PM
har ???5.39.217.77:8898& A; o9 W* _+ F5 `: D* [8 F9 F
48/4=12 ppl ...1 K I D+ e& K1 G! s# E
badmintion 2x = computer 1x 1 o1 S' E3 |7 _公仔箱論壇then 12/3 x=4ppl8 }7 v) X0 I1 Q9 I% B. i/ Z
badmintion 8 ppl ... computer 4 ppl作者: dick007 時間: 2007-9-13 03:44 PM
