21+50+15=869 h8 R( F3 ^, S9 u9 V
why 86.... u# G) y! M8 @4 R8 X$ M6 T4 q
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
% C4 e+ y/ A5 UTVBNOW 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。then he giv bck his fren 50/ x: r ~- w1 G7 U
and the shoes cost is 15
$ t+ R$ S/ [* `2 q2 B1 R" C
+ i' z2 C! {- E; f! l$ {5 Atvboxnow.comso total he loss is 86...
, f. I2 j, l D+ ztvboxnow.comTVBNOW 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。4 J, \; g, a( Y! O8 t G% _
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |