題目誤導人~公仔箱論壇8 R/ k. i; M; o* I
owner 100
6 U3 W, R# X5 q! e, _# Vtvboxnow.comowner's son 20tvb now,tvbnow,bttvb$ F- Z, } n3 ]
each pay 40公仔箱論壇+ @' v, {+ p+ \0 ~
40*3 = 120
9 O6 Y$ h* Z- y- x! B# ]4 a5 Btvb now,tvbnow,bttvb120(3 guys) - 20(owner's son) = 100 (owner) |