21+50+15=86tvb now,tvbnow,bttvb8 i) A I+ E0 B( B# ~. G
why 86..., C8 v ]0 o( ~$ B
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
, s9 X4 B* P+ @5 }: x6 tthen he giv bck his fren 50tvb now,tvbnow,bttvb2 l, {' O6 N% H5 J6 f# z/ b
and the shoes cost is 15tvb now,tvbnow,bttvb, T- w( a6 T1 t ~! A
5 q: ~- P- a* y* i nos.tvboxnow.comso total he loss is 86...os.tvboxnow.com5 @- G$ A4 Y( l* h5 [; L! A8 E( I: l
公仔箱論壇/ c, _# a' F, {0 \% A9 R- l4 P$ \
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |