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100块呀~~~
197... wat is the answer?7 T6 Y: H7 v9 q9 z
公仔箱論壇0 ?. I: Z1 g/ v: P* g
boss's loss:' E6 R+ ?# @  X0 N1 \# e7 N
100 return to neighbouros.tvboxnow.com0 F9 Q+ D, ^# w/ a1 e
79 return to buyer( ^" r9 R8 K$ A  c$ a! b! y- q
18 cost of product; F0 W: h) t7 C4 r
= 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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