題目誤導人~
; x' B2 B1 t$ x3 H5 j. ^owner 100tvb now,tvbnow,bttvb9 A. ]: ~( ^9 Q1 E: p) ?
owner's son 20
4 P& H* F( Y/ i1 S" j6 q% l5.39.217.77each pay 40tvb now,tvbnow,bttvb) e+ x# D3 N7 m. Z" w! f- g2 T0 ~
40*3 = 120+ ~* o, \( F. l
120(3 guys) - 20(owner's son) = 100 (owner) |