21+50+15=86
. ?# l; a8 {$ H- pwhy 86...
. w6 T0 h; i, w$ R( P2 ?tvb now,tvbnow,bttvbbecos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
! ?+ H8 K k* o, v: \! j/ ttvb now,tvbnow,bttvbthen he giv bck his fren 50
7 k2 j0 p+ V8 Pand the shoes cost is 15公仔箱論壇& M6 P9 q4 u. W/ |
tvb now,tvbnow,bttvb6 u2 X' n: ` x& v) K5 O9 `
so total he loss is 86...
9 I6 `( v% M% e6 j: P
+ H" r) K$ ]3 f: d( x* S) w公仔箱論壇[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |