21+50+15=86
f, h* z9 U8 \# D: b; \5.39.217.76why 86..." V# s1 B- `5 P! V
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21公仔箱論壇' }) C6 C5 }* Q, R' N4 L9 |
then he giv bck his fren 50公仔箱論壇2 p) }( W5 Y5 Y" B* t" g
and the shoes cost is 15
( L1 g. b ^( A6 Z" c0 btvb now,tvbnow,bttvbtvb now,tvbnow,bttvb% ^7 _3 L* m" N0 T% ^% U5 x4 s
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。0 ~. F6 X: [- h1 W5 S, r! s1 c# z
) O: w0 x+ X/ u1 J& V, x6 l
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |