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Profit?

by neoreaves » Mon May 17, 2010 10:50 am
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 1000 units of its product and sold all the units for k+60 dollars each, what was manufacturer M's gross profit on the 1000 units?

1) Last month, manufacturer M's revenue from sale of the 1000 units was $150,000
2) manufacturer M's cost of producing 500 units in a month is $45000 less than its cost of producing 1000 units in a month.
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by gmatmachoman » Mon May 17, 2010 10:55 am
neoreaves wrote: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 1000 units of its product and sold all the units for k+60 dollars each, what was manufacturer M's gross profit on the 1000 units?

1) Last month, manufacturer M's revenue from sale of the 1000 units was $150,000
2) manufacturer M's cost of producing 500 units in a month is $45000 less than its cost of producing 1000 units in a month.
I think it is a GMAT prep question & Ajith has answered very nicely... Plz chk them out Nero bhai!
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by frank1 » Mon May 17, 2010 7:21 pm
It seems to be trick question
as
from 1 we can get k but not t
from 2 we cannot get t either

now we think as both equation has k and t ,C should give the answer
but i say it is trick question as t cancels out and again we dont have concrete value of t even with both equations so answer seems to be E
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