Demand

Essentials of Economics (MindTap Course List)
8th Edition
ISBN:9781337091992
Author:N. Gregory Mankiw
Publisher:N. Gregory Mankiw
Chapter14: Monopoly
Section: Chapter Questions
Problem 6PA
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1. Demand and Costs. Assume you are faced with the following demand curve,
P = 20-0.5Q
Where P is the dollar price per unit and Q is the number of units sold per month, and Q must be
2 or more.
a. Write the expression (definition) for this firm’s Total Revenue (TR)
b. Write the expression for this firm’s marginal revenue (MR).
c. What is Q when the P is zero?
d. What is P when the Q is zero?
e. Profit maximization occurs where MR=MC. If MC=$10 what is the profit maximizing level
of Q and P?
f. As a business owner, you are thinking about lowering the price of this product. If you
lower the price by 10% from your answer in e., will your TR rise or fall?

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