[讨论]PREP数学题目的综合讨论帖

jjsunkist

500,000是be paid 吧，是revenue诶，怎么可以拿来当cost算materials

jjsunkist

以下是引用sinowen在2007-12-15 11:45:00的发言：
50.   4230-!-item-!-187;#058&003784



A construction company was paid a total of $500,000 for a construction project.  The company's only costs for the project were for labor and materials.  Was the company's profit for the project greater than $150,000 ?







(1)  The company's total cost was three times its cost for materials.







(2)  The company's profit was greater than its cost for labor.

答案选择C，我选择E。 我真是觉得里面的条件不足以得到PROFIT和数字之间的关系。。。

由条件(1)有 MATERIALS的费用为500,000/3.  
又 The company's only costs for the project were for labor and materials.  
则LABOR的费用为500,000*2/3
因为(2) The company's profit was greater than its cost for labor
所以profit> 500,000*2/3 > $150,000

-- by 会员 冰岛哲学C (2007/12/15 13:30:00)

500,000是be paid 吧，是revenue诶，不行拿来当cost算materials吧