返回列表 回復 發帖

数学题(英文)

a class total gt 48 ppl.
( {! c+ K/ y, S& P* J  f  s# X公仔箱論壇6 ppl din join any club+ d0 I7 h" D8 s" N" [& Y+ M# j* m) z
1/4 of the student in de clas join badminton club n computer club.5.39.217.760 z1 R% h1 u/ k" O/ W1 [
the number of badminton club member which is not computer club member is 2 times de member of computer club.% z: L( j, w( ?6 e5 Q
how many ppl in de clas join badminton club???
28 students are badminton club members only.TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。7 m/ V5 t3 C0 s

7 X  C1 H% [- {: ~1 U' J5.39.217.762 students are in computer club only.
$ M1 \1 i6 j6 r$ c- ~
; G. [: W: C4 H8 }/ |12 students are in both badminton and computer club.5.39.217.76" t4 x" v; U4 r3 `# @/ H

- a& Y  d2 ?7 z+ X9 F$ u公仔箱論壇therefore 28+2+12+6=48
har ???
# @" \+ ^1 @+ @# Q4 I48/4=12 ppl ...
9 K/ k% `0 {3 I  _badmintion 2x = computer 1x1 v, Q, X" K2 ^; [. o
then 12/3 x=4ppl公仔箱論壇& h! O* u5 N8 V0 L
badmintion 8 ppl ... computer 4 ppl
28 students
返回列表