-15 (鞋子)
+50 (邻居)
-29 (找钱)
-50 (还邻居)
-------
-44
假钞是忽悠人的,没算应该赚没赚的6块机会成本
靠,压力太大了,试试吧,亏了44,计算如下
本帖于 2008-01-01 20:35:44 时间, 由普通用户 笨企鹅 编辑
-15 (鞋子)
+50 (邻居)
-29 (找钱)
-50 (还邻居)
-------
-44
假钞是忽悠人的,没算应该赚没赚的6块机会成本
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