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100块呀~~~
197... wat is the answer?
. ~( M" s. \, i% e! Z9 q
' @5 d1 z6 W* C8 M4 |/ e6 Ltvb now,tvbnow,bttvbboss's loss:
. w. V% t3 L4 ?; R1 rtvb now,tvbnow,bttvb100 return to neighbour8 i- l3 d* B9 P6 C
79 return to buyer
: ?2 B, O! ?8 V7 h: U, B2 c1 M) E& R18 cost of product
$ A0 D% B/ C* {9 k  ?= 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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