21+50+15=860 @4 I7 z' y/ _5 l
why 86...4 s: i8 w8 d+ v1 b5 Y3 l0 {
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
9 b! C. z6 G6 E$ ~then he giv bck his fren 50
$ Q0 l, _& v$ Iand the shoes cost is 15+ s9 L3 w6 w! x& I
X* J' |/ D7 L& J; v3 f- ]
so total he loss is 86...tvb now,tvbnow,bttvb- P9 \% D- K9 L f% Y+ Z
* c7 e6 B( M8 [0 k0 ]' W3 W公仔箱論壇[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |