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100块呀~~~
197... wat is the answer?5.39.217.777 ?3 L' R' c$ O; u* r3 s) y

4 o* t! ]  S3 P% S; _tvb now,tvbnow,bttvbboss's loss:
5 [1 r/ ^$ @  O+ ?5 h4 r+ k! btvb now,tvbnow,bttvb100 return to neighbour
+ E+ u: U: x0 W. c8 O& }5 d/ A5.39.217.7779 return to buyer
4 z* l) T0 r1 u8 m! f18 cost of producttvb now,tvbnow,bttvb  {5 r+ t+ S1 n7 F
= 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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