21+50+15=86tvb now,tvbnow,bttvb" {: @" o4 O( E7 a$ g! D
why 86..., k2 w' z3 W1 F, S* M8 b/ F' V) h
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
- F2 Q" r/ ~- a: q2 ]5.39.217.77then he giv bck his fren 50
- l! e& d! ~6 m( Nand the shoes cost is 15
) `5 h+ e+ @7 I R9 HTVBNOW 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。5.39.217.77' q& L( _" G5 h+ |) z$ f
so total he loss is 86...5.39.217.77& }! L" b: x2 \/ K
3 `; ^1 A) N" Y- y[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |