The Official Solution says C but the explanation is not clear.

A construction company was paid a total of $500,000 for a construction project. The company’s only costs for the project were for labour and materials. Was the company’s profit for the project greater than $150,000?
I. The company’s total cost was three times its cost for materials.
II. The company’s profit was greater than its cost for labour.

Expert Asked on June 22, 2017 in Data Sufficiency.
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1 Answer(s)

Hi Ryan,

Its a algebra question.

Given,

Total = 5,00,000

Let labour cost = x and material cost = y

So, Expenditure = x+y

then, profit = total – expenditure.

Questions: Profit > 1.5 lakhs

So, according to the values we picked,

It is, 5,00,000 – (x+y) > 1.5 lakhs ?

So, x+y < 3.5 lakhs ?

We need to know both x and y or some relation.

Statement I is insufficient:

3y = x+y

2y = x

We have to find, is it  3y < 3.5 lakhs ?

we still dont know the range or values of x and y,

So insufficient.

Statement II is insufficient:

profit > x

5,00,000 – (x+y) > x

500000 -y > 2x

but nothing any real values.  So insufficient.

Together it is sufficient.

since x = 2y,

500000 -y > 2(2y)

5y < 5,00000

y < 1,00,000

So, 3y < 3,00,000.

So, sufficient.

Answer has to be C.

hope this helps.

Expert Answered on June 22, 2017.
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