返回列表 回復 發帖

数学题(英文)

a class total gt 48 ppl.
  P$ e6 @  T3 L) t6 ppl din join any club公仔箱論壇! I6 n5 a7 T& }3 ?' M
1/4 of the student in de clas join badminton club n computer club.
) y. _8 q. ~7 z3 G' v' M. ttvb now,tvbnow,bttvbthe number of badminton club member which is not computer club member is 2 times de member of computer club.
  _( O( [) H% f1 ~. w5 Ftvb now,tvbnow,bttvbhow many ppl in de clas join badminton club???
28 students are badminton club members only.3 t* w. i9 p$ l# I2 U9 T

/ I8 j" j& r) w3 c8 i! i, W& K) a2 students are in computer club only.
% m$ N5 n& a5 A& y1 K7 j  z+ otvb now,tvbnow,bttvb
& O% `2 [! n' ^3 S/ d: ltvb now,tvbnow,bttvb12 students are in both badminton and computer club.
6 M: {+ t& j% V  G2 y# g0 m( p公仔箱論壇
  J2 S* Y2 J! |( T7 l1 c# sos.tvboxnow.comtherefore 28+2+12+6=48
har ???
! c: E+ ?: S/ t& b/ A, kos.tvboxnow.com48/4=12 ppl ...( g  @! Q7 W0 P# p. v4 u, E
badmintion 2x = computer 1x+ ]% A# D+ K; e/ c4 f* H; C
then 12/3 x=4ppl* _1 P+ o4 b* e5 _1 C5 {9 a* _4 n: W
badmintion 8 ppl ... computer 4 ppl
28 students
返回列表