題目誤導人~+ _3 v3 @) ]; |, S) p7 R
owner 100
: r: |" R; v" h! m公仔箱論壇owner's son 20
, _2 {/ [- Y6 q% t- z/ y% v公仔箱論壇each pay 40
$ z) @8 X* }/ m# k1 R# ]$ t& }* a公仔箱論壇40*3 = 120tvb now,tvbnow,bttvb* l8 R9 @: F$ X. M: w2 t5 [9 J
120(3 guys) - 20(owner's son) = 100 (owner) |