21+50+15=86公仔箱論壇4 C/ k1 s2 l- c/ \- _. w
why 86...( p. z/ l% Q+ z, `6 V' ~
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
0 j% l1 T+ s9 V6 M) `* y公仔箱論壇then he giv bck his fren 50公仔箱論壇( _0 ~% o4 o) V7 Z9 @! x
and the shoes cost is 15
6 r* A9 p; l% G$ F7 rtvb now,tvbnow,bttvb
- t+ G- g! n6 P2 E# i6 `% hso total he loss is 86...
. b1 V2 u/ v$ P* G/ _
' S% t/ x7 r% [ p% X% n- B[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |