21+50+15=865.39.217.77:88988 W4 p5 B4 }: k6 c
why 86...
* ?2 B5 V X- p3 O' hbecos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
$ d. S* c- k# K& Ktvb now,tvbnow,bttvbthen he giv bck his fren 50' h8 _8 \! G1 X- K3 f9 b9 T
and the shoes cost is 155 l" O. h4 W; g, Y2 y
% J2 C* \4 m( |公仔箱論壇so total he loss is 86...
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# f6 A' n' \' y- m[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |