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100块呀~~~
197... wat is the answer?, z2 o: f. y; ~, b' f  o
) [+ A- ]. d) K# |* k7 K1 w( c
boss's loss:
: j6 L/ ?! e2 M' \. G+ Ttvb now,tvbnow,bttvb100 return to neighbour
; `. Q& D+ o' ~5 {79 return to buyer
$ Y8 i$ z5 f. `  b* }$ c5.39.217.7618 cost of product0 }8 u% G. Y  W& ~, {
= 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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