21+50+15=86tvb now,tvbnow,bttvb$ n7 n, f, T5 T6 C
why 86...
) _- I% L, W6 C0 q; A2 KTVBNOW 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。becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21/ M# ~: W z2 @$ _0 ] y6 l
then he giv bck his fren 50
# Y8 c" n' S9 A! Gtvb now,tvbnow,bttvband the shoes cost is 15tvb now,tvbnow,bttvb% N5 f4 r4 i, N, e* f* n
; v3 g6 M. i: t; s0 ]# K) f公仔箱論壇so total he loss is 86...
: Q! u' t4 C4 X6 `. e5.39.217.77
. D6 q( u$ ~. m, l3 r+ y) m[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |