21+50+15=86
, U& m( x) p1 ~) e* J F( W5.39.217.76why 86...公仔箱論壇4 V5 o9 a6 O9 x. ]9 N) O
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21公仔箱論壇: l& a& ]! i/ r( m
then he giv bck his fren 50
! C) v3 b5 [7 U; o# }' Dand the shoes cost is 155.39.217.76 e9 q- A' t8 J( Q5 L
; P7 u( A7 C/ C* ^4 PTVBNOW 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。so total he loss is 86...
( P$ }, r3 o* V5 Vtvb now,tvbnow,bttvb$ j9 P# f* b- b1 R! T* C
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |