Ans) x = 65 units
P = $ 2,775
To maximize profit function, differentiate it with respect to X
dP/dX = 150 - 2X, put it equal to = 0
150 - 2X = 0 implies X = 75
Put X = 65.
P( X) = 150*65 -( 65)^2 - 2000
= 9,000 - 4,225 - 2000 = 2,775
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