希望给个确切的回复谢谢了

tigerspeed

126.ds.last year一厂家生产某某，其expense is 100,000 plus 5% of its total revenue. now we know the factory have profit last year, then is the total unit produced > 21,000 units?
1) price per unit is $5 (好像是这样，或者是更复杂些)
2）total revenue is 150,000
橙子评价:选A,设total units produced为N,所以5N-100,000-5N*5%>0->N>21,052>21,000,条件2与题干矛盾

dreadpower

   我觉得选D，第一个条件不说了，能推出来

   第二个条件不觉得矛盾：R=150000，则expense=100,000+150,000*5%=107,500

   也能推出来

   抱歉，我做错了，应该是A，2条件不知道单价

[此贴子已经被作者于2004-5-12 11:58:14编辑过]