bencake

題目誤導人~
& K6 B8 [* S- U3 lowner 100
7 w/ [. i% w9 N6 D' Sowner's son 20
) a4 S& U2 N7 R9 w; ?+ l$ o3 oeach pay 40
! C5 Z% \; v. @3 @$ D公仔箱論壇40*3 = 120tvb now,tvbnow,bttvb$ V) H! H. {% A8 D9 g& x. s
120(3 guys) - 20(owner's son) = 100 (owner)