題目誤導人~
9 C- O$ r" @ e2 M+ [& Towner 100) {' B) K/ z/ D, D
owner's son 20
5 b4 e& T+ K/ u4 B6 A2 utvb now,tvbnow,bttvbeach pay 40tvb now,tvbnow,bttvb, @3 J! {9 Y. X3 J
40*3 = 120
* X( _7 p' C; M* Ptvb now,tvbnow,bttvb120(3 guys) - 20(owner's son) = 100 (owner) |