題目誤導人~
$ S s3 o* u; z9 g公仔箱論壇owner 1005.39.217.76( u8 E" K3 ]" y
owner's son 20) T) }0 N3 t, k8 a1 b
each pay 40
+ ~ i' o- j2 f! V- J2 u& S9 g$ ^tvb now,tvbnow,bttvb40*3 = 120
! k( A8 n' K1 J4 I; c" A2 itvb now,tvbnow,bttvb120(3 guys) - 20(owner's son) = 100 (owner) |