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数学题(英文)

a class total gt 48 ppl.
1 L- {7 R, B1 E6 B. C6 b4 N2 A公仔箱論壇6 ppl din join any club1 `* ]4 `: G9 x
1/4 of the student in de clas join badminton club n computer club.
1 `2 o: E  _: c/ O# r$ ?公仔箱論壇the number of badminton club member which is not computer club member is 2 times de member of computer club.8 h3 [# W  Y- j3 P  q* s1 U7 B6 v
how many ppl in de clas join badminton club???
28 students are badminton club members only.5.39.217.764 A) q& C3 U% L7 L0 W9 G3 E8 B/ Q5 L- P
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2 students are in computer club only.
1 r6 e3 o6 X, J  M4 ~5.39.217.76tvb now,tvbnow,bttvb( p& r+ Z/ h3 L9 O- J2 U$ b
12 students are in both badminton and computer club.
: S* _2 X+ F+ D  ], ?0 D2 h5.39.217.76公仔箱論壇% t7 d4 N, b+ E  B  g6 M) w; X
therefore 28+2+12+6=48
har ???
& `/ K9 i/ u: x, `  ~: U48/4=12 ppl ...* @: j: t) G; J* W$ ~6 H& d& ?
badmintion 2x = computer 1x& Q5 ]9 ?+ W4 ^
then 12/3 x=4ppl/ c" h# P# n6 W" \' \
badmintion 8 ppl ... computer 4 ppl
28 students
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