題目誤導人~
" \1 {/ \' n# h- _- v公仔箱論壇owner 100
0 S4 z) X8 V7 N* N/ c8 B5 e5.39.217.77:8898owner's son 20公仔箱論壇 L3 b! w% q; U( L, I
each pay 40
7 Z* f* S* E8 T+ ~/ b6 P40*3 = 120
+ n5 a1 a9 H9 Z) l0 Htvb now,tvbnow,bttvb120(3 guys) - 20(owner's son) = 100 (owner) |