21+50+15=86; r) @4 C1 [4 \, F( G
why 86...
+ ?1 I' u% ~& vbecos he change 50 "small money" then giv bck to customer 29 and he keep the balance 215.39.217.760 Q* l, a% ?% D8 Y$ t% U
then he giv bck his fren 50
y7 n. R/ f8 S3 m" b0 Z6 @' ktvb now,tvbnow,bttvband the shoes cost is 15
! i. N+ o; n/ E* C6 |- [/ Q, \7 q2 A- [
so total he loss is 86...
: m" B" w( b: N0 T/ q9 d( n0 c7 ?/ ttvb now,tvbnow,bttvb
- N- w0 _. \0 P3 b, Z+ t[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |