Economics: Principles, Problems, & Policies (McGraw-Hill Series in Economics) - Standalone book
20th Edition
ISBN: 9780078021756
Author: McConnell, Campbell R.; Brue, Stanley L.; Flynn Dr., Sean Masaki
Publisher: McGraw-Hill Education
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Concept explainers
Question
Chapter 3, Problem 1DQ
To determine
Law of demand and a shape of the demand curve.
Expert Solution & Answer
Explanation of Solution
The law of
The demand curve slopes downward. The reason for the downward slope is due to the law of demand. The law of demand states that there is a negative relationship that exists between the price and the quantity demand. This inverse relationship causes the negative slope.
The market demand is the total addition of all the individual quantities at a particular price. Thus, the market demand curve is the horizontal summation of the individual demand curve.
Economics Concept Introduction
Concept introduction:
Demand: Demand refers to the total value of the goods and services that are demanded at a particular price in a given period of time.
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Suppose you are given the following demand data for a product
Price
$10
9
8
7
LO
6
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Quantity
Demanded
The price elasticity of demand (based on the midpoint formula) when price increases from $7 to $9 Is
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30
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Multiple Choice
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70
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3. Refer to the expanded table below from review question 8.
LO3.4
a. What is the equilibrium price? At what price is there nei-
ther a shortage nor a surplus? Fill in the surplus-shortage
column and use it to confirm your answers.
b. Graph the demand for wheat and the supply of wheat. Be
sure to label the axes of your graph correctly. Label equi-
librium price Pand equilibrium quantity Q.
c. How big is the surplus or shortage at $3.40? At $4.90?
How big a surplus or shortage results if the price is 60
cents higher than the equilibrium price? 30 cents lower
than the equilibrium price?
Thousands
of Bushels
Surplus (+)
or
Shortage (-)
Thousands
Price per
Bushel
of Bushels
Supplied
Demanded
85
$3.40
72
80
3.70
73
75
4.00
75
70
4.30
77
65
4.60
79
60
4.90
81
Let (inverse) demand be Pb = 113 - 4 Qb and (inverse) supply be Pv = 27. What quantity are
sellers willing to sell at price below $ 27 per unit?
Answer: your answer
Submit
Price ($)
$120
$100
$80
$60
$40
$ 20
$0
0
LO
5
Demand
e
Quantity
10
Supply
15
Quantity
Eqm
20
25
30
Chapter 3 Solutions
Economics: Principles, Problems, & Policies (McGraw-Hill Series in Economics) - Standalone book
Ch. 3.6 - Prob. 1QQCh. 3.6 - Prob. 2QQCh. 3.6 - Prob. 3QQCh. 3.6 - Prob. 4QQCh. 3.A - Prob. 1ADQCh. 3.A - Prob. 2ADQCh. 3.A - Prob. 3ADQCh. 3.A - Prob. 4ADQCh. 3.A - Prob. 5ADQCh. 3.A - Prob. 6ADQ
Ch. 3.A - Prob. 7ADQCh. 3.A - Prob. 1ARQCh. 3.A - Prob. 2ARQCh. 3.A - Prob. 3ARQCh. 3.A - Prob. 4ARQCh. 3.A - Prob. 5ARQCh. 3.A - Prob. 6ARQCh. 3.A - Prob. 1APCh. 3.A - The following table shows two demand schedules for...Ch. 3.A - Prob. 3APCh. 3 - Prob. 1DQCh. 3 - Prob. 2DQCh. 3 - Prob. 3DQCh. 3 - Prob. 4DQCh. 3 - Prob. 5DQCh. 3 - Prob. 6DQCh. 3 - Prob. 7DQCh. 3 - Prob. 8DQCh. 3 - Prob. 1RQCh. 3 - Prob. 2RQCh. 3 - Prob. 3RQCh. 3 - Prob. 4RQCh. 3 - Prob. 5RQCh. 3 - Prob. 6RQCh. 3 - Prob. 7RQCh. 3 - Prob. 8RQCh. 3 - Prob. 9RQCh. 3 - Prob. 1PCh. 3 - Prob. 2PCh. 3 - Prob. 3PCh. 3 - Prob. 4PCh. 3 - Prob. 5PCh. 3 - Prob. 6PCh. 3 - Prob. 7P
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- 4. How will each of the following changes in demand and/or supply affect equilibrium price and equilibrium quantity in a competitive market; that is, do price and quantity rise, fall, or remain unchanged, or are the answers indeterminate be- cause they depend on the magnitudes of the shifts? Use sup- ply and demand to verify your answers. LO3.5 a. Supply decreases and demand is constant. b. Demand decreases and supply is constant. c. Supply increases and demand is constant. d. Demand increases and supply increases. e. Demand increases and supply is constant. f. Supply increases and demand decreases.arrow_forward5. Show how a change in the price of one good affects the supply of another. Use the graph to show how an increase in the price of organic onions would shift the demand curve, supply curve, or both curves in the market for tomatoes. Assume that onions and tomatoes are neither complements nor substitutes. Market for Tomatoes 10 9. Supply 8 7 4 Demand 1 4 8 10 12 14 16 18 20 Quantity (Ibs) LO 3. 2. Price ($)arrow_forwardAnswer the next question on the basis of the following demand schedule. Price $6 5 4 3 2 1 Quantity Demanded O 1 O 2 O 3 4 5 The price elasticity of demand is unit-elastic (based on the midpoint formula) Multiple Choice 6 LO throughout the entire price range because the slope of the demand curve is constant. in the $4 to $3 price range only. over the entire $3 to $1 price range. over the entire $6 to $4 price rangearrow_forward
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- Next, complete the following graph, labeled Scenario 2, by shifting the supply and demand curves in the same way that you did on the Scenario 1 graph. PRICE (Dollars per pen) 10 9 8 co LO 5 + 3 2 1 0 0 1 Price Quantity 2 Equilibrium Object True Scenario 2 3 False Supply 4 5 6 7 QUANTITY (Millions of pens) Demand Scenario 1 8 9 Compare both the Scenario 1 and Scenario 2 graphs. Notice that after completing both graphs, you can now see a difference between them that wasn't apparent before the shifts because each graph indicates different magnitudes for the supply and demand shifts in the market for pens. 10 Use the results of your answers on both the Scenario 1 and Scenario 2 graphs to complete the following table. Begin by indicating the overall change in the equilibrium price and quantity after the shift in demand or supply for each shift-magnitude scenario. Then, in the final column, indicate the resulting change in the equilibrium price and quantity when supply and demand shift in…arrow_forwardNote: Price (P) is on the vertical axis and quantity (Q) is on the horizontal axis. (? 40 35 30 25 20 15 10 + + 5 10 15 20 25 30 35 40 QUANTITY The slope of this line is PRICE LOarrow_forwardSuppose you observe the price and quantity demanded of a good at two dates. There is a large percentage change in price but only a small percentage change in quantity. Which is the most likely price elasticity of demand? O 1.5 O 1 O 0.5arrow_forward
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