21+50+15=86
) J( a. x! }! k0 e. Mwhy 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。: }7 L0 i1 I- ~8 U% I& C4 d
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
# W1 p6 C4 y: L$ P( S9 D5 M Tthen he giv bck his fren 50
* J( @1 y9 e4 u6 i, l s7 c- E公仔箱論壇and the shoes cost is 15tvb now,tvbnow,bttvb3 c0 b3 B. J0 P
' r9 X+ x( P$ z5 J' l; B& y6 ?: ?; E* hso total he loss is 86...
1 [% Q, M, H0 a e, B* X MTVBNOW 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。% @) z1 E4 t) W2 i1 x! |4 I( m% H% H
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |