21+50+15=86
7 q8 S. ^: \6 `2 n7 P* H公仔箱論壇why 86...tvboxnow.com' P/ ]! k! N& x3 R
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
& K4 S0 _" b, V, N( }) ^) _. sthen he giv bck his fren 50tvboxnow.com3 S* l* Z$ `: }/ @6 ~( R; u) n$ A
and the shoes cost is 15
2 A/ Q3 a. h& v% b. J公仔箱論壇
& f5 B- f$ c( ~$ Xtvboxnow.comso total he loss is 86...tvboxnow.com( l3 Y! B2 }9 y z9 [
# D' H5 R: c4 _" p4 t7 KTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |