21+50+15=86# w+ ~- ?2 `1 `, `# V9 X/ d
why 86...www3.tvboxnow.com* [" _; P5 o0 ]9 ]/ `
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
* H, l% K' U' Y2 T* qthen he giv bck his fren 50TVBNOW 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) b+ u7 }( `! f" M! C$ U& E
and the shoes cost is 15www3.tvboxnow.com8 ~5 J: {% p1 e6 [% I( U1 f( ^0 x8 j R
! s" z% k: w: ^/ g) V+ r6 h, J
so total he loss is 86...* Y5 Y. z6 p$ X0 k" ?9 z
* I {, g) m" @$ C0 g2 ?- }. o0 Z- ^
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |