A company produces and sells shirts. The fixed costs are $7000 and the variable costs are $6 per shirt.
(a) Shirts are sold for $12 each. Find cost and revenue as functions of the quantity of shirts, q.
Cost is C(q) = 7000 + 6 q
Revenue is R(q) = 12 q
(b) The company is considering changing the selling price of the shirts. Demand is q = 2000 - 40p, where p is price in dollars and q is the number of shirts. What quantity is sold at the current price of $12? What profit is realized at this price?
At the current price, the company sells 1520 shirts.
The profit realized at this price is $ 2120
(c) Use the demand equation to write cost and revenue as functions of the price, p. Then write profit as a function of price.
Cost is C(p) = 19000 - 240 p
Revenue is R(p) = 20000 - 40 p^2
Profit is Ļ(p) = 2240 p - 40 p Ā· 2 - 19000
(d) Use a graphing utility to graph profit against price. Find the price that maximizes profits. What is this profit?
The price that maximizes profits is $ 28
and the profit is $ 12360