Question

In: Economics

Do It Yourself Diet Systems sells a weight monitoring and control system so that you don't...

Do It Yourself Diet Systems sells a weight monitoring and control system so that you don't have to prepare all those healthy foods that you are actually supposed to be eating if you're on a diet. It estimates the monthly quantity demanded for its complete kit to be represented by the equation:

P = 944 - 11Q, where P is the price of the whole kit.

Its monthly cost function is

STC = 10,000 + 44Q + 4Q2.

Determine the profit maximizing quantity sold and the price for the kit.

How much will the maximum monthly profit be?

Solutions

Expert Solution

The profit maximizing quantity is at the quantity where Marginal revenue equal marginal cost .

P = 944 - 11Q

TR = 944Q - 11Q^2

MR = 944 - 22Q

STC = 10,000 + 44Q + 4Q^2

MC = 44 + 8Q

944 - 22Q = 44 + 8Q

900 = 30Q

Q = 30

P = 944 - 11*30 = $614

maximum monthly profit = TR -TC

profit = (30 * 614 ) - 10,000 + 44*30  + 4*30^2

profit = 18420 ) - 14920

profit = $ 3500


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