21+50+15=86
2 Y/ U& `/ \' K2 i! hwhy 86...0 q5 E! s" \: \. r+ C) x
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 213 t- F. r, O* H" ^) P; w
then he giv bck his fren 50tvb now,tvbnow,bttvb y+ g3 W$ ^) f. d6 R9 u
and the shoes cost is 15
4 Y& m! j# ^9 r; x公仔箱論壇
5 m, R1 A8 V6 Stvb now,tvbnow,bttvbso total he loss is 86...
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[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |