21+50+15=86
7 y8 o. T( Q4 F6 b( V5.39.217.76why 86...2 I1 [5 p! ?4 T- c0 H }% q5 G! M6 Y
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
$ c& y* g, J- v( m. }then he giv bck his fren 505.39.217.760 Q: X/ D) r$ a! o
and the shoes cost is 15
! H* D: X: U7 d# }7 h* d1 ~公仔箱論壇tvb now,tvbnow,bttvb; u# e* m- k. T$ T, l
so total he loss is 86...
: }! P0 B2 n0 ztvb now,tvbnow,bttvb$ @' J7 x; |7 P. I4 Y
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |