21+50+15=86
% S% C- @* q3 H O$ K4 Utvb now,tvbnow,bttvbwhy 86...
, d0 J" A8 p! D: V7 l公仔箱論壇becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
& K0 } [" ^. w' n& e- Uthen he giv bck his fren 50
) U; G3 ?) J3 O% W2 }, E- f- Eand the shoes cost is 15
4 A+ S9 t+ ~+ F" Itvb now,tvbnow,bttvb
5 _0 X$ B3 t% C8 `5 _! @( Oso total he loss is 86...公仔箱論壇! M/ C3 x4 N+ z* M
& F9 ~0 y4 H% a0 |6 W6 g7 k
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |
發表於 2008-12-3 01:46 AM
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