題目誤導人~
! M9 Z% v+ r% Q; b: I8 Xowner 100tvb now,tvbnow,bttvb5 K4 K7 r0 K7 h8 }: q
owner's son 20
' P3 k) E) H( Ntvb now,tvbnow,bttvbeach pay 40tvb now,tvbnow,bttvb/ G; W1 X. g: S# I
40*3 = 1207 e; A0 M. J, b/ p0 k) k
120(3 guys) - 20(owner's son) = 100 (owner) |