21+50+15=86
! i5 E3 [6 g. y) I7 E公仔箱論壇why 86...$ c4 c* E, J. C: l/ @/ \' z
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21' m' Y. U1 H3 {' y( M
then he giv bck his fren 50* o- n& t O7 H7 V$ S7 E a
and the shoes cost is 15tvb now,tvbnow,bttvb8 m2 U! @9 I! L& E" V& R
! W) O9 q" z: p8 ^ I' i
so total he loss is 86...
+ A# b& x# l+ L! n5.39.217.77:8898
; {9 U& q. E" t) Ltvb now,tvbnow,bttvb[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |