21+50+15=86公仔箱論壇) N4 ~- J& N. D: D8 M* d7 V6 A+ x& P: e
why 86...www1.tvboxnow.com5 c, p# R% s0 j
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
: @# H% }9 R0 j& W& m0 a: E( O4 m公仔箱論壇then he giv bck his fren 50- l+ R! u/ p, s, [% N0 q% G
and the shoes cost is 15. B/ [0 i3 W# n: n6 p' ^' T
0 l; X8 O. N6 k8 o! ~& a7 T公仔箱論壇so total he loss is 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。# U) G- O' W8 R( @5 {% [
www1.tvboxnow.com- `( I, s, _" u5 u3 m- h
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |