数学题(英文)

a class total gt 48 ppl.
6 ppl din join any club
1/4 of the student in de clas join badminton club n computer club.公仔箱論壇/ _" ?, |: ]$ o7 `/ Y
the number of badminton club member which is not computer club member is 2 times de member of computer club.
how many ppl in de clas join badminton club???

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genzo2106

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發表於 2007-9-12 01:49 PM | 只看該作者

28 students are badminton club members only.
公仔箱論壇9 ?; ~, o% x/ @+ C
2 students are in computer club only.www2.tvboxnow.com8 W8 J) o; U: B/ z
公仔箱論壇5 f9 Y2 c$ y+ e6 l1 Y; q& o3 P* A
12 students are in both badminton and computer club.
4 s& ]+ X, b. g& w
therefore 28+2+12+6=48