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Marrrta [24]
3 years ago
13

The relationship between the selling price of an item and the cost of an item has been determined to be q=-20s+400 has been dete

rmined by a marketing firm, where q is the quantity sold in a year and s is the selling price. If the cost to produce the item is $12, what is the selling price that optimizes the year yearly profit?
Mathematics
1 answer:
MrMuchimi3 years ago
7 0
We are given with the variable cost which is:
q = -20s + 400

The selling price is 's'. So, the profit can be represented by:
P = qs - q(12)

Subsituting:
P = (-20s + 400)s - 12 (-20s + 400)
P = -20s^2 + 640s - 4800

To optimize this, we must differentiate the equation and equate it to zero, so:\
dP/ds = -40s + 640 = 0
Solving for s,
s = 16

So, the selling price should be $16 to optimize the yearly profit.
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