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

  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? 

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 ^_^

第一题也看不懂。。 继续召唤高人，。。。

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..

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

多谢   systemunknow  

i  agree   E

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..