21+50+15=86
0 J' y F9 [* ]* t4 R- k5.39.217.76why 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。, B" t/ @, G' ~0 R! J
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21( @" ]9 t! j, o# S9 F9 P. @3 b* b" w5 a
then he giv bck his fren 505.39.217.76# @; T7 H) N' z- m
and the shoes cost is 15
# S2 o5 `! B6 C0 i# }0 I5.39.217.76
$ o* [% u' ^* t" M. ATVBNOW 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...
# m4 k$ p8 ~: \2 j5.39.217.76 G' c% L+ n4 v
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |