ECN 2020 Lecture 5: SET 5

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yellowcattle191

8 Jun 2017

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A sporting goods store has estimated the demand curve for brand a running shoes as a function of price. Use the diagram to the right to answer the following questions. Calculate demand elasticity using the midpoint formula between each set of points given below. (enter your responses rounded to two decimal places and include a minus sign if necessary. ) Demand elasticity between points a and b is. If the store currently charges a price of , then increases that price to , what happens to total revenue from shoe sales? total revenue falls. If the store currently charges a price of , then increases that price to , what happens to total revenue from shoe sales? total revenue remains constant. If the store currently charges a price of , then increases that price to , what happens to total revenue from shoe sales? total revenue rises.

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1. Grand TV Manufacturer wants to increase the quantity of TVs it sells by 8%. If the price elasticity of demand is 4, the manufacturer must:

a. decrease price by 1.5%.

b. increase price by 1.5%.

c. increase price by 2.0%.

d. decrease price by 2.0%.

2. Suppose that an Italian ice cream firm is facing a linear demand curve and that the current price for the Italian ice cream is set at a point where the price elasticity is 0.7. If the firm decreases the product price,

Select one:

a. the demand becomes less inelastic, and total revenue increases.

b. the demand becomes more inelastic, and total revenue decreases.

c. the demand becomes more inelastic, and total revenue increases.

d. the demand becomes less inelastic, and total revenue decreases.

3. Suppose that in a month, the price of movie rentals decreases from $3.25 to $3. At the same time, the quantity of movie rentals demanded increases from 100 to 120. The price elasticity of demand for movie rentals (calculated using the midpoint formula) is:

a. elastic.

b. zero.

c. inelastic.

d. unitary elastic.

4. The price elasticity of demand for color printers is 1.6, and you would like to see the quantity demanded of color printers increase by 32%. Then the percentage change in price should be:

Select one:

a. 15%.

b. 25%.

c. 10%.

d. 20%.

5. The price of apple increases from $1 to $1.10. At the same time, the quantity of apples demanded decreases from 100 to 90. The price elasticity of demand for apples (calculated using the initial value formula) is:

a. 0.9.

b. 0.02.

c. 1.1.

d. 1.

cyanspider596

In this question, we will determine the price elasticity of demand using both the coefficient of elasticity and the total revenue test.

Use the demand schedule in the table below to answer the following questions.

Quantity Demand	Price
10	200
20	150
30	100
40	50
50	25

a) Calculate the total revenue for each row in the demand schedule. indicate whether total revenue increases or decreases between each row int eh demand schedule. use the total revenue test to classify each price/quantity change as elastic, inelastic, or uni-elastic.

b) calculate the own price-elasticity coefficient for each row in the demand schedule. use the coefficients you calculate to classify each price/quantity change as elastic, inelastic, unit elastic.

in your answer it will be useful to recall that the midpoint formula for percentage change is:

%change midpoint = (final - initial) / ((finial + initial)/2)

and own price elasticity can be calculated by using the formula

Ed= (percentage change in quantity demand of product x) / (percentage change the in the price of product x)

fuchsiacoyote513

If the price of X drops from $1 to 80 cents and the quantity rises from 2,000 pounds purchased to 3,000 pounds purchased what can we say about the relationship between total revenue from the sale of X and the value of the price elasticity of demand? Suppose that the demand for x rises from 2,000 pounds to 2,100 pounds after the price drop. What can we say about the change in total revenue from the sale of X and the price elasticity of demand in that case?

In general, what is the relationship between the change in total revenue from the sale of a product and the value of the price elasticity of demand?

champagneseal161

ECN 2020 Lecture 5: SET 5

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