ChaseDream

标题: 请高人指点 [打印本页]

作者: rickyabc007 时间: 2006-9-22 12:36
标题: 请高人指点

1. how many intergreter are in the pair the the serious

1) the lowest number is an integreter

2) the largest number is 9 bigger than the lowerest number

不会做此提, 看不太明白

请高人指点

作者: rickyabc007 时间: 2006-9-22 12:43
A company get a 50000 dollar contact of a project, the project only cost labor and material, 问profit is larger than 15000/

1).Labor cost is twice the cost of material

2) Profit is larger than Labor cost----she choose E,too. 我统一选E。

讨论： C

请问着提有确定的答案吗?

作者: dori0214 时间: 2006-9-22 12:55

第二题应该是c，labor cost = 2 * cost of material

labor cost + cost of material = 50000

thus, cost of material > 15000

with regard to the 2nd condition, profit > cost of material > 15000

plz refer to the following entry, the answer is E

50000 contract= labor cost + cost of material + profit ^_^

[此贴子已经被作者于2006-9-22 16:03:36编辑过]

作者: dori0214 时间: 2006-9-22 12:55

第一题也看不懂。。继续召唤高人，。。。

作者: systemunknow 时间: 2006-9-22 14:07

hmm not sure if I am doing this right but the way I did was:

1) Cost of Labor = x, Material= 2x,

2) Profit > Cost of Labor x

However, if profit = 20,000 we have 30,000/3 = 10,000 which holds true for 1) and 2)

But at profit = 14000 we have 36000/3=12000 which holds true for 1) as wellas 2)

So I choose E since I can have it at both ways, how did you choose C?

Remember Labor + material does NOT = 50,000 you have to include in profit as well..

[此贴子已经被作者于2006-9-22 14:57:44编辑过]

作者: rickyabc007 时间: 2006-9-22 15:51

第一题就是关于三角形边长：已知三边分别为 x+10, 5x, 和 2x-22, (数字可能有误)，求以下那个数字为最小边。a) 12, b) 14, c) 18 d) 20…

请教次题

作者: rickyabc007 时间: 2006-9-22 16:01

1. 一共有100，000个产品，2%是次品，其中70%怎样，60% 怎样，问二者都占的是多少。600

I=A+B-A cross B

请问着题问的是什么 ?

作者: rickyabc007 时间: 2006-9-22 16:03

多谢 systemunknow

i agree E