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100块呀~~~
197... wat is the answer?公仔箱論壇" A7 |. Y# ]; J$ m* G, S7 y
tvb now,tvbnow,bttvb8 r$ V# I" |" h) g+ x
boss's loss:
1 {# X3 ]4 x: ?( ^" `4 s. Atvb now,tvbnow,bttvb100 return to neighbour: m- i; d1 b4 f+ D/ S& x/ e1 r
79 return to buyer  ^% w9 k7 ^. O7 w# Q2 w
18 cost of product
/ p1 w, {7 K7 U  b6 A; I3 p/ T3 z= 197
197
y 97 R??????
197
97...
97蚊
100+79+18
197????
100(cash)+18(cost)
100(cash)+97(change)+18(cost)+3(profit)
197 or 200
197-200
200-197
Thank you
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