21+50+15=86
[' q8 k8 n3 P" S+ \2 C! e0 u% z: zTVBNOW 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。why 86...* `, J8 W& ?7 S; f% Y% T; f$ c
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21# g1 ?; S" f) N! a5 ?
then he giv bck his fren 50
2 S: b$ A# @& A& g# |5.39.217.76and the shoes cost is 15# ]1 B9 m: u4 \1 H9 c
' I# D b. R0 O& b/ `, y
so total he loss is 86...
/ I' T4 v9 J/ `6 o' k& n4 Z0 m) Ktvb now,tvbnow,bttvb
( {& s9 |* _) i/ W5.39.217.76[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |