21+50+15=86TVBNOW 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 w) ] L& Y" U3 W/ i& N: O, {, o
why 86...公仔箱論壇$ } b7 {" n5 ^
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
+ u$ H" N, b- E7 @ \& ]5 Nthen he giv bck his fren 50tvboxnow.com0 a7 N1 \2 @% Y4 I0 J# h
and the shoes cost is 15
9 i5 y( t7 |2 U* W9 }6 Y( @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。' W4 R7 H8 \/ X
so total he loss is 86...
+ G1 Y' X, _) ~; s% t公仔箱論壇
0 M3 ~( S! P* Z: g3 C公仔箱論壇[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |