21+50+15=86tvb now,tvbnow,bttvb& h0 f, Z5 k. F; w! g
why 86...
" A+ o0 A! T7 K( V$ _$ \- e& ITVBNOW 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。becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
5 @6 C E# B# }+ S2 U. }/ C5.39.217.77then he giv bck his fren 505.39.217.77$ v" F5 G+ X' R% o6 Q8 @
and the shoes cost is 15
. \0 g) ~ w# u- S c+ r" B, j5.39.217.77
# @2 H# B3 t2 e$ Q3 `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。so total he loss is 86...
7 {" o, }6 p* e6 L9 @: a1 ltvb now,tvbnow,bttvb
* Z8 l. B. `# k$ X. Itvb now,tvbnow,bttvb[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |