21+50+15=86
, i: _8 I4 \7 e5 x6 B( LTVBNOW 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。why 86...
9 R0 |* d* ^7 J6 R2 rbecos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
0 {+ ]9 X: w; Q- u# T/ h9 v' @tvb now,tvbnow,bttvbthen he giv bck his fren 50
6 C# V7 B0 |9 i: ~7 Dand the shoes cost is 15TVBNOW 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。3 I# y" ]& Q a, E; n8 {
tvb now,tvbnow,bttvb' L/ z1 F& ~# }. e% o
so total he loss is 86...www1.tvboxnow.com1 e% M/ f* W0 G2 x$ h, l
9 ~' q2 z g) l& t, _
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |