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100块呀~~~
197... wat is the answer?0 d/ A6 _! U4 m0 g* z: M

7 f, D+ p+ f& q7 v4 f+ s) D, w$ B- |5 G& Ftvb now,tvbnow,bttvbboss's loss:os.tvboxnow.com5 d, r  \" k# S
100 return to neighbour
. a, {. F8 p* }# dos.tvboxnow.com79 return to buyer# E9 j7 ]6 [2 I6 R( s4 ]  w& d
18 cost of product) j6 F+ l  n* r9 c% |+ O
= 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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