bencake

題目誤導人~
- D  `& P) P# v公仔箱論壇owner 100tvb now,tvbnow,bttvb" N# r, f: Z7 y+ P& J" J) I' |* H  K
owner's son 20os.tvboxnow.com  M/ H! t! w% Y; d* u* g
each pay 40os.tvboxnow.com7 H0 r8 _+ S( m6 J- _( G& c
40*3 = 120
/ k9 N  v0 r% {- u$ p120(3 guys) - 20(owner's son) = 100 (owner)