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标题: GWD-2-22 [打印本页]

作者: bella 时间: 2010-5-25 16:22 标题: GWD-2-22

Q22:

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.

A

作者: accusr 时间: 2010-5-25 16:34

p=500-c
c=l+m
(1) c=3m ; l=2m , 500-3m ????
(2) 500-3m>l ?????
(1+2) 500-3m>2m , 500>5m ,m<100
500-300 ( Max )=200 , 200>150.
Answer c

作者: bella 时间: 2010-5-25 16:48

回复 2# accusr

太感谢了，

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