題目誤導人~
% P0 G5 n1 @( S Q- ytvb now,tvbnow,bttvbowner 100tvb now,tvbnow,bttvb) n1 N+ G0 S- B, b1 N# w- n2 o: \
owner's son 20
0 X. C! X1 N4 J" }each pay 40
9 G- B. k5 Q% O9 |9 C; X40*3 = 1201 m' g. E8 S7 V. f% U
120(3 guys) - 20(owner's son) = 100 (owner) |