a class total gt 48 ppl. # x& g: B% o0 F# k. I2 I2 _" F6 ppl din join any club # |9 M. x- X# W6 ^0 A$ q4 C0 _# \公仔箱論壇1/4 of the student in de clas join badminton club n computer club.5.39.217.77:8898# D3 r. ]% z) k' k) `& E' X
the number of badminton club member which is not computer club member is 2 times de member of computer club.. `1 T- q& n; f2 S2 p4 R
how many ppl in de clas join badminton club???
28 students are badminton club members only. . `& N5 f( Y. x1 r9 t+ I公仔箱論壇 8 P' a) @" Y I- ~5 G) x( e公仔箱論壇2 students are in computer club only.5.39.217.77:88988 t) W; Q) m+ R
, g3 J1 Q7 q6 }" T' f12 students are in both badminton and computer club.( j1 P I0 E! V" }" i) P+ C
3 t8 F. X: _: }) f" R7 A s5.39.217.77:8898therefore 28+2+12+6=48