For manufacturer M

[thc013]

Will somebody please explain why the answer to this question is E?

For manufacturer M, the cost C of producing x units of its product per month is given by C = kx + t, where C is in dollars and k and t are constants. Last month, if manufacturer M produced 1,000 united of its product and sold all the units for k + 60 dollars each, what was manufacturer M's gross profit on the 1,000 units?

(1) Last month, manufacturer M's revenue from the sale of the 1,000 units was $150,000

(2) Manufacturer M's cost of producing 500 units in a month is $45,000 less than its cost of producing 1,000 units a month.

[RonPurewal]

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