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100块呀~~~
197... wat is the answer?
$ g: b+ T, [# B- y" E4 G9 c- Zos.tvboxnow.com' e5 B  E" Y) a5 w+ K4 z
boss's loss:
  |- m& @4 W6 v7 Y. Eos.tvboxnow.com100 return to neighbour+ e6 f% t! k! q7 r, W
79 return to buyer
$ n# R; C' E" t, U公仔箱論壇18 cost of productos.tvboxnow.com, m/ `% J. s) D5 z6 }% L
= 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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