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数学题(英文)

a class total gt 48 ppl.
0 D# g3 E8 ^& Z  p  S- _( ~公仔箱論壇6 ppl din join any clubtvb now,tvbnow,bttvb  c$ l5 G/ g( I9 g9 t
1/4 of the student in de clas join badminton club n computer club.$ K* J4 w/ I3 L: `- d
the number of badminton club member which is not computer club member is 2 times de member of computer club.公仔箱論壇4 L4 S# a% P6 ?3 N- K  O9 X
how many ppl in de clas join badminton club???
28 students are badminton club members only.
; m; {  g: k, S0 |公仔箱論壇& `" O+ c4 ]2 I9 \% D1 T
2 students are in computer club only.
) U: g- G4 u, R3 O" e3 L) f' L
' ]' R; ]1 _4 j( p4 \5 M! Otvb now,tvbnow,bttvb12 students are in both badminton and computer club.- Y1 L7 x! T* u; e0 q

4 _# H7 c9 `2 Q# h. Ttherefore 28+2+12+6=48
har ???
' r% W/ N  H6 c9 h1 W9 g1 b48/4=12 ppl ...
% N8 V1 w. K+ K% y. I  zbadmintion 2x = computer 1x3 ]% q1 B+ P. ^% V5 A- ]
then 12/3 x=4ppl
) m3 H: }$ w. m" I& y" {2 htvb now,tvbnow,bttvbbadmintion 8 ppl ... computer 4 ppl
28 students
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