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100块呀~~~
197... wat is the answer?
# o9 ]1 h/ C5 W3 \. [3 a5 e& M) J# ?
boss's loss:
; S- i8 i% b$ A2 K! a" p1 q5 y! L1 M100 return to neighbour1 A  [8 l/ ^# h3 S! t6 R
79 return to buyer2 K# v, e2 T1 O! o* T
18 cost of product
) E9 M" G3 d9 O. `tvb now,tvbnow,bttvb= 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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