Ruth’s Rubies is a single-price monopolist in the market for rubies. Suppose Ruth’s Rubies currently charges $200 for its rubies (i.e. sells 3 rubies). If it lowers the price to $100 (to sell 4 rubies), how large is: the quantity effect? the price effect? Price of a Ruby Quantity of Rubies Demanded Total Revenue Marginal Revenue $500 0 400 1 300 2 200 3 100 4 0 5
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Ruth’s Rubies is a single-price monopolist in the market for rubies.
Suppose Ruth’s Rubies currently charges $200 for its rubies (i.e. sells 3 rubies). If it lowers the price to $100 (to sell 4 rubies), how large is:
the quantity effect?
the price effect?
Price of a Ruby |
Quantity of Rubies Demanded |
Total Revenue |
Marginal Revenue |
$500 |
0 |
|
|
400 |
1 |
|
|
300 |
2 |
|
|
200 |
3 |
|
|
100 |
4 |
|
|
0 |
5 |
|
|
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- 4 In order to price-discriminate, a firm must be able to separate its customers who have different elasticities of demand. A firm can earn. more revenue by charging higher prices to consumers with relatively inelastic demand, and lower prices to consumers with relatively elastic demand. Consider the different customers listed below. Which ones have relatively inelastic demand, and which ones have relatively elastic demand? Items (4 items) (Drag and drop into the appropriate area below) Jordan goes to an out-of-state university. Categories The Jones family travels for a vacation. Robert goes to a matinee movie. Relatively elastic Drag and drop here Jerry buys multiple items (soda, popcorn, candy) from the concession stand at a movie theater. Relatively inelastic Drag and drop hereThe demand function for SkanDisc 2GB thumb drives is given by p- 4(x + 3) e"/a where p is the wholesale unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. Compute the price, p, when x 6. Do not round your answer. Price, p- 36e dollars Use implicit differentiation to compute the rate of change of demand with respect to price, p, when x- 6. Do not round your answer. Rate of change of demand, x' x thousands of units per dollar Compute the elasticity of demand when x - 6. Do not round your answer. Elasticity of Demand-2. Assume that Moscow Makkers, a new hamburger outlet in Moscow, is unsure of it pricing policy. Each week the store changes the hamburger price slightly, using various specials. Data on quantities sold and their corresponding prices ($) are contained in the file hamburger.xlsx Suppose that the demand equation that relates quantity sold (q,) to price (p,) is In(q,) = B, + In(p,)B2 +e,. Note that equation can be written in the more familiar form y, = B, +x, B2 +e, by defining y In(q,) and x In(p,). (7 points) Please enclose your computer output. (a) Assume that the assumption of the simple regression model hold for transformed value y and x. Find least squares estimates b, and b, of B and B2. [bl and b2 (b) Given an economic interpretation of least square estimate of B2 (b2).
- I have filled in al the mathematical answers / just need graphs that are bold with asteriks The following relations describe monthly demand and supply for a computer support service to small businesses: Qd = 3000 - 10P Qs = -1000 + 10P Where Q is the number of businesses that need services and P is the monthly fee, in dollars. At what average monthly fee would demand equal zero? Qd = 3000 – 10P 0 = 3000 – 10P 10P = 3000/10 P = $300 At what average monthly fee would supply equal zero? Qs = -1000 + 10P 0 = -1000 + 10P -10P = -1000 P = 1000/10 P = $100 ***Plot the supply and demand curves. What is the equilibrium price/output level? We know at equilibrium, Qd = Qs 3000-10P = -1000+10P 3000 + 1000 = 10P + 10P 4000 = 20P 4000/20 P = $ 200 (Equilibrium Price) If P = $200 Qd = 3000 – 10(200) Qd = 3000 – 2000 Qd = 1000 units (Output level) Qs = -1000 + 10(200) Qs = -1000 + 2000 Qs = 1000 units (Output level) Suppose demand increases and leads to a new demand curve: Qd = 3500 -…01 Question Hugh, Frank, and Luis are the only three buyers of gold in a small mining town. Their inverse demand functions for gold are as follows: Hugh: p=240.00-40.00 × Qu. Frank: p= 48.00-8.00 × QF. Luis: p= 12.00-2.00 × QL Se QH-QF, and QL are the quantities (in ounces) demanded by Hugh, Frank, and Luis, respectively.News Analysis: Market Power and the EpiPen Consider the pharmaceutical company Mylan that produces epinephrine injection devices called EpiPens. In the presence of other firms producing substitutes for this good, the price of EpiPens is $150. Now suppose that competitors to Mylan no longer produce epinephrine injection devices, so Mylan now has pricing power in this market. As the economist on staff at Mylan, you are charged with the task of figuring out what your company's new pricing strategy should be. The following graph shows the marginal cost (MC), which is assumed to be constant, and the average total cost (ATC) of Mylan. The graph also shows the demand curve (D) for EpiPens and the marginal revenue curve (MR) once the firm has market power. On the graph, use the grey point (star symbol) to indicate the quantity of EpiPens demanded if Mylan continues to charge $150. Dashed drop lines will automatically extend to both axes. 1000 900 Q at $150 800 700 Profit Max 600 500 400 ATC at…
- If a store increases its prices by 20% and its total revenue decreases by 10%, the demand it faces in this price range must be perfectly inelastic perfectly elastic inelastic unit elastic elastic Assume that the supply of corn is relatively price inelastic, while the demand for corn is relatively price elastic. If the government imposes a per-unit excise tax on the production of corn, the incidence or burden of the tax will fall entirely on sellers equally on both buyers and sellers more on buyers than on sellers entirely on buyers more on sellers than on buyers The absolute value of the price elasticity of demand for a good increases when the good has fewer substitutes the price of an input used to produce the good increases the good becomes a necessity consumers spend a greater portion of their budget on the good the good must be purchased as soon as the need arises (not possible to wait) O O O OOn the following graph, use the green point (triangle symbol) to plot the annual total revenue when the market price is $30, $45, $60, $75, $90, $105, and $120 per bike. 1280 1200 Total Revenue 1120 - 1040 980 880 800 720 640 560 o15 30 45 60 75 90 105 120 135 150 165 180 PRICE (Dollars per bike) According to the midpoint method, the price elasticity of demand between points A and B is approximately ▼ Suppose the price of bikes is currently $30 per bike, shown as point B on the initial graph. Because the demand between points A and B is a $15-per-bike increase in price will lead to in total revenue per day. In general, in order for a price decrease to cause a decrease in total revenue, demand must be TOTAL REVENUE (Dollars)The manager of the Sell-Rite drug store accidentally mismarked a shipment of 20- pound bags of charcoal at $3.15 instead of the regular price of $4.25. In a week, a total of 180 bags of charcoal was sold. The store normally sells an average of 120 bags per week. What is the store’s arc elasticity of demand for charcoal? Also make an economic interpretation of the elasticity figure.