21+50+15=86
5 V7 p+ [* c3 V# X0 |/ Htvboxnow.comwhy 86...
& U5 Z, w' U9 }' v4 c9 Dbecos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21& \+ |7 e; B' q# v2 y/ \1 d
then he giv bck his fren 50
. O" h; @2 y; ]+ t9 P6 v( r1 oand the shoes cost is 15
S) [3 E% _ G ]tvb now,tvbnow,bttvb
1 e1 k- k3 L- i/ V) l; ?so total he loss is 86...TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。" s5 X8 X/ W* h( C
/ V! q8 L d- p9 a& `$ p$ wtvboxnow.com[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |