21+50+15=86 G4 d8 I3 Q' d; Z
why 86...
8 J% B' a v; x8 }. r2 Cbecos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
* ^: J' e- ^* t# m: Mthen he giv bck his fren 505 M( z) r1 }# X. Y [; \
and the shoes cost is 15
w8 o3 R- }) x# O- t# [# E1 R2 Y9 b& ~tvb now,tvbnow,bttvbTVBNOW 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。2 j! k) L" a$ _1 w8 L' E7 l" Z
so total he loss is 86...
# l% H% C, b8 m( S* j* B9 @tvb now,tvbnow,bttvb
# s+ c8 _+ C9 x! m- e+ atvb now,tvbnow,bttvb[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |