21+50+15=86
0 E3 }% L: Y3 Z+ |why 86...5.39.217.76' A/ |- t4 D( y
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
& A1 | O7 V: Etvb now,tvbnow,bttvbthen he giv bck his fren 507 D& C+ B3 @2 \1 g
and the shoes cost is 15tvb now,tvbnow,bttvb; }' d1 w' ]9 {5 W
tvb now,tvbnow,bttvb7 R" ?' `% g& z( v+ R% Z
so total he loss is 86...公仔箱論壇- m: s* p4 A( j6 F4 S- O/ x. l
{& e% e9 o+ `* U3 k' Utvb now,tvbnow,bttvb[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |