題目誤導人~
" u {. D1 E; f* I5 E- rowner 100tvboxnow.com# v4 G2 a9 ]: ~4 i/ d; s3 g" U" ]
owner's son 20tvboxnow.com9 L% m. `1 h; R; e
each pay 40
) R; T1 Q P. w+ ?8 y" N9 Xtvb now,tvbnow,bttvb40*3 = 1209 m, o+ r8 |, Y6 ?6 H! k+ |
120(3 guys) - 20(owner's son) = 100 (owner) |