21+50+15=86
* x2 w; R- X, d6 Zwhy 86...9 Z, s9 I5 Y* S5 L) K
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 212 I3 P: k# d! T4 }- i! |
then he giv bck his fren 505 c! D2 n6 h2 E+ B2 Y* X
and the shoes cost is 15tvb now,tvbnow,bttvb4 l' w' I7 j" I, b4 W+ S% Z
3 }. ~% r+ c( e9 wso total he loss is 86...
7 D6 X. ]' A* t: X5 W+ h W% c
5 }; C/ M* _& X7 x& \tvb now,tvbnow,bttvb[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |