21+50+15=86tvb now,tvbnow,bttvb: y4 P: ^7 j+ w4 N/ k" ^* h" \
why 86...TVBNOW 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。, [: i" u6 X Z$ j
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21; [) Z/ B7 D$ f; N2 O P
then he giv bck his fren 50
4 U- b. G' k+ k& V) w. ?公仔箱論壇and the shoes cost is 15- t( a M/ F6 `2 q ?) w5 l
TVBNOW 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。* v8 ~* P8 a$ r/ z( {, \: M3 G( V, z
so total he loss is 86...
5 T6 [! `7 ]- i: \. Stvb now,tvbnow,bttvb$ m5 ~2 N; A( J5 a! e# ?( Y
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |