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数学题(英文)

a class total gt 48 ppl.
( v1 e6 r/ J: O3 C6 ppl din join any club
8 g1 W; x$ ~  M- @  f7 K& g1/4 of the student in de clas join badminton club n computer club.5.39.217.764 G1 t1 ?6 N9 r! Q7 `) n, C& T
the number of badminton club member which is not computer club member is 2 times de member of computer club.
' z7 Z+ T; U. i$ ~8 x) w, ^how many ppl in de clas join badminton club???
28 students are badminton club members only.
. |4 \5 k. \9 htvb now,tvbnow,bttvb4 v. |; |0 c0 ~& H$ u
2 students are in computer club only.公仔箱論壇2 l5 b2 E3 C- \5 M; s; O, X0 r
tvb now,tvbnow,bttvb- T5 O7 ?& d1 g# S2 C  s: F
12 students are in both badminton and computer club.5.39.217.76/ T: J: o; B7 u% I

* g3 q6 k) q: o- jtherefore 28+2+12+6=48
har ???
% d) @' A; w6 Q48/4=12 ppl ...tvb now,tvbnow,bttvb0 D/ x; B) m' t: r# R4 p: u1 t7 x
badmintion 2x = computer 1x公仔箱論壇* R- v6 @# v9 v7 {$ y5 J1 d
then 12/3 x=4ppl
1 ^" l& L. v  M3 U! o2 @8 z公仔箱論壇badmintion 8 ppl ... computer 4 ppl
28 students
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