Tutorial Exercise Worldwide annual sales of smartphones in over a 5 year period were projected to be approximately q = −10p + 4,540 million phones at a selling price of $p per phone. (a) Obtain a formula for the price elasticity of demand E. (b) In one particular year the actual selling price was $277 per phone. What was the corresponding price elasticity of demand? Interpret your answer. (c) Use your formula for E to determine the selling price that would have resulted in the largest annual revenue. What, to the nearest $10 million, would have been the resulting annual revenue? Step 1 (a)Obtain a formula for the price elasticity of demand E. Recall that the price elasticity of demand E is the percentage rate of decrease of demand divided by the percentage increase of price, given by the formula. E = − dq dp · p q We are already given the formula q = −10p + 4,540 for the demand of smartphones (in millions). First, we find the derivative dq dp . dq dp = Next, substitute the values for dq dp and q into the formula for the price elasticity demand. E = − dq dp · p q = − · p −10p + 4,540 = p −10p + 4,540 Therefore, the price elasticity demand for smartphones is E =
Tutorial Exercise Worldwide annual sales of smartphones in over a 5 year period were projected to be approximately q = −10p + 4,540 million phones at a selling price of $p per phone. (a) Obtain a formula for the price elasticity of demand E. (b) In one particular year the actual selling price was $277 per phone. What was the corresponding price elasticity of demand? Interpret your answer. (c) Use your formula for E to determine the selling price that would have resulted in the largest annual revenue. What, to the nearest $10 million, would have been the resulting annual revenue? Step 1 (a)Obtain a formula for the price elasticity of demand E. Recall that the price elasticity of demand E is the percentage rate of decrease of demand divided by the percentage increase of price, given by the formula. E = − dq dp · p q We are already given the formula q = −10p + 4,540 for the demand of smartphones (in millions). First, we find the derivative dq dp . dq dp = Next, substitute the values for dq dp and q into the formula for the price elasticity demand. E = − dq dp · p q = − · p −10p + 4,540 = p −10p + 4,540 Therefore, the price elasticity demand for smartphones is E =
Managerial Economics: Applications, Strategies and Tactics (MindTap Course List)
14th Edition
ISBN:9781305506381
Author:James R. McGuigan, R. Charles Moyer, Frederick H.deB. Harris
Publisher:James R. McGuigan, R. Charles Moyer, Frederick H.deB. Harris
Chapter3: Demand Analysis
Section: Chapter Questions
Problem 10E
Related questions
Question
Tutorial Exercise
Worldwide annual sales of smartphones in over a 5 year period were projected to be approximately
price of $p per phone.
q = −10p + 4,540
million phones at a selling (a)
Obtain a formula for the price elasticity of demand E.
(b)
In one particular year the actual selling price was $277 per phone. What was the corresponding price elasticity of demand? Interpret your answer.
(c)
Use your formula for E to determine the selling price that would have resulted in the largest annual revenue. What, to the nearest $10 million, would have been the resulting annual revenue?
Step 1
(a)Obtain a formula for the price elasticity of demand E.
Recall that the price elasticity of demand E is the percentage rate of decrease of demand divided by the percentage increase of price, given by the formula.
E = −
·
dq |
dp |
p |
q |
We are already given the formula
q = −10p + 4,540
for the demand of smartphones (in millions).First, we find the derivative
.
dq |
dp |
dq |
dp |
Next, substitute the values for
and q into the formula for the price elasticity demand.
dq |
dp |
E | = | −
|
||||
|
||||||
= | −
|
|||||
|
||||||
= |
|
Therefore, the price elasticity demand for smartphones is
E =
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