21+50+15=86
7 L9 C; x: B' A+ }. ftvb now,tvbnow,bttvbwhy 86...公仔箱論壇0 ] F% U4 F( h- q9 K
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 215.39.217.76; J2 M0 V0 }; q% J5 t
then he giv bck his fren 50
8 W3 w9 P! l. L2 _: Z; x" n公仔箱論壇and the shoes cost is 15公仔箱論壇' R1 f9 D) W Y& H0 j
$ R" k2 o# `8 Q" G; W0 kso total he loss is 86...
0 M) B6 _$ J0 n. n* P$ \; G5.39.217.76$ C3 ~1 W; ?7 v' d
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |