a class total gt 48 ppl. 4 }$ f# s1 Y: C* ~) M z! ktvb now,tvbnow,bttvb6 ppl din join any club * W3 Q( j9 @- c: M! [9 _* y& i1/4 of the student in de clas join badminton club n computer club.( C" i m& \3 ?3 r* f( U
the number of badminton club member which is not computer club member is 2 times de member of computer club. ( ]; E, s! d. c" A9 K U5.39.217.77:8898how 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.公仔箱論壇* b. C% Z" n. `% t
4 I2 G m0 e# }- r+ X/ Q5.39.217.77:88982 students are in computer club only. , E7 g& z1 g- x2 f" C+ F9 ^5.39.217.77:8898tvb now,tvbnow,bttvb% J$ c( u; ?/ w
12 students are in both badminton and computer club.公仔箱論壇. q; Y! h# }) v: V1 n; T$ F
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therefore 28+2+12+6=48作者: 00360353 時間: 2007-9-12 06:59 PM
har ???: I+ q" u4 b- i3 y4 J
48/4=12 ppl ... J+ v0 q6 P& Y
badmintion 2x = computer 1x E- n& i( V+ z3 B. @# v( o o3 Rtvb now,tvbnow,bttvbthen 12/3 x=4ppl- L* G Z1 M+ K
badmintion 8 ppl ... computer 4 ppl作者: dick007 時間: 2007-9-13 03:44 PM
