Question 6 (8 marks)

a. Using the data found in Question 1, calculate the elasticity of demand and elasticity of supply at each price change in the market for gold picture frames using the midpoint formulafor both supply and demand.Because you are calculating the change between two levels, you will have 7 calculations for demand and 7 for supply, for the 8 prices. (2 marks - 1 mark each for correct demand and correct supply elasticities)

Price	Quantity Demanded	Elasticity of Demand	Quantity Supplied	Elasticity of Supply
$55	1,850,000		635,000
$65	1,575,000		740,000
$95	1,330,000		850,000
$105	1,300,000		910,000
$125	1,195,000		1,195,000
$145	1,085,000		1,550,000
$178	900,000		1,925,000
$197	765,000		2,175,000

b.Based on your elasticity of demand calculation, if the price of gold picture frames rises from $105 to $125 will total revenue go up or down? Explain. You need to answer the first part of this question by explaining how you interpreted the elasticity of demand at this point. How much will revenue change (in dollar terms)? (2 marks - 1 mark for calculation, one mark for explanation using

c. What is the price elasticity of supply if the price rises from $105 to $125? Is it inelastic or elastic? What does this indicate? (2 marks)

d. Explain the difference between price elasticity of supply in the short run and price elasticity in the long run. Provide an example of each (not in the textbook). (2 marks, mark for each, mark for each example)