bencake

題目誤導人~
, Q  ~4 y  }+ g- T4 A- D2 d$ K公仔箱論壇owner 1005.39.217.77% w. B" f" [/ X
owner's son 205.39.217.77: ]5 o: @5 L- X2 {8 L. D# T4 M
each pay 408 V4 ^  @6 r/ h. K2 e
40*3 = 120tvb now,tvbnow,bttvb! r; E2 s: t* b6 q, p3 v
120(3 guys) - 20(owner's son) = 100 (owner)