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100块呀~~~
197... wat is the answer?
5 D% ]* V! y5 ]$ `' m5 d) e- E( K; k
8 O( W  ^6 C- Z5.39.217.77:8898boss's loss:
2 E$ G) b% Q. C5 I100 return to neighbour" m6 Z4 S% ~) D  O7 A: Q  u3 X
79 return to buyer
' e" F6 B* U3 Q% L( \! s4 C# W: |公仔箱論壇18 cost of product
$ y6 S! B) I! k2 b= 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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