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3. The Economic Problem. CHAPTER. CHECKPOINTS. Checkpoint 3.1. Checkpoint 3.2. Checkpoint 3.4. Clicker version. Problem 1. Problem 1. Problem 1. Problem 2. Clicker version. Problem 2. Problem 2. Problem 3. Clicker version. Problem 4. Checkpoint 3.3. Clicker version.

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Presentation Transcript
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3

The Economic Problem

CHAPTER

CHECKPOINTS

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Checkpoint 3.1

Checkpoint 3.2

Checkpoint 3.4

Clicker

version

Problem 1

Problem 1

Problem 1

Problem 2

Clicker

version

Problem 2

Problem 2

Problem 3

Clicker

version

Problem 4

Checkpoint 3.3

Clickerversion

Problem 5

Clickerversion

Problem 1

checkpoint 3 1
Practice Problem 1

The figure shows an economy’s production possibilities. Which points are attainable?

CHECKPOINT 3.1
checkpoint 3 15
Solution

The PPF is the boundary between combinations of goods that are attainable and unattainable.

Any point on the PPF or below (inside) the PPF is attainable.

Any point outside the PPF is unattainable.

Point A, B, C, D and E are attainable.

Point F and G are unattainable.

CHECKPOINT 3.1
checkpoint 3 16
Study Plan Problem

We can produce all combinations ______.

A. on the PPF but not inside or outside the PPF

B. inside the PPF but not on the PPF or outside the PPF

C. on the PPF and outside the PPF

D. inside the PPF and on the PPF

CHECKPOINT 3.1
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Practice Problem 2

The figure shows an economy’s production possibilities. Which points are efficient?

CHECKPOINT 3.1

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Solution

To be efficient, a point must be attainable. So points F and G are not efficient.

Points inside the PPF are not efficient because more goods can be produced at such points.

So points D and E are not efficient.

The only efficient points are those on the PPF—points A, B, and C.

CHECKPOINT 3.1

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Study Plan Problem

Production efficiency occurs when

A. it is not possible to produce more of one good or service without producing less of something else.

B. we use the least possible quantity of resources.

C. we produce only one good.

D. we produce at least possible cost.

CHECKPOINT 3.1

  • Figure 1
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Practice Problem 3

The figure shows an economy’s production possibilities. Which points are inefficient?

CHECKPOINT 3.1

  • Figure 1
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Solution

Inefficiency occurs when resources are misallocated or unemployed.

Inefficiency occurs at any point inside the PPF.

Combinations at points D and E are inefficient.

CHECKPOINT 3.1

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Study Plan Problem

Which points are inefficient?

A. Points F and G only

B. Points D and E only

C. Points A, B, C, D, and E

D. Points A, B, and C only

CHECKPOINT 3.1

  • Figure 1
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Practice Problem 4

The figure shows an economy’s production possibilities. Which points illustrate a tradeoff?

CHECKPOINT 3.1

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Solution

Begin by recalling that a tradeoff is an exchange—giving up something to get something else.

A tradeoff occurs when moving along the PPF from one point to another.

So moving from any point on the PPF, point A, B, or C, to another point on the PPF illustrates a tradeoff.

CHECKPOINT 3.1

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Study Plan Problem

A tradeoff occurs when we ____.

A. move from a point inside the PPF to a point on the PPF

B. move from a point outside the PPF to a point on the PPF

C. move from a point on the PPF to another point on the PPF

D. move from a point on the PPF toa point outside the PPF

CHECKPOINT 3.1

  • Figure 1
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Practice Problem 5

The figure shows an economy’s production possibilities. Which points illustrate a free lunch?

CHECKPOINT 3.1

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Solution

Begin by recalling that a free lunch is getting something without giving up something else.

Free lunches occur at all points below (or inside) the PPF.

These points are D and E.

CHECKPOINT 3.1

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Study Plan Problem

A free lunch occurs at ____.

A. Points A, B, C, and D

B. Points F and G only

C. Points D and E only

D. Points A, B, and C

CHECKPOINT 3.1

  • Figure 1
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Practice Problem 1

The table shows Robinson Crusoe’s production possibilities.

If Crusoe increases production of berries from 21 pounds to 26 pounds and his production is efficient, what is his opportunity cost of a pound of berries?

Does Crusoe’s opportunity cost of berries increase as he produces more berries?

CHECKPOINT 3.2

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Solution

Production is efficient, so Crusoe produces on his PPF.

The opportunity cost of an extra pound of berries is the decrease in the quantity of fish divided by the increase in the quantity of berries as he moves along his PPF in the direction ofproducing more berries.

CHECKPOINT 3.2

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Table 1 tells you that to increase the quantity of berries from 21 pounds to 26 pounds, Crusoe moves from row F to row E.

His production of fish decreases from 15 pounds to 13 pounds.

To gain 5 pounds of berries, Crusoe must forego 2 pounds of fish.

CHECKPOINT 3.2

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The opportunity cost of 1 pound of berries is the 2 pounds of fish forgone divided by 5 pounds of berries gained.

His opportunity cost is 2/5 of a pound of fish.

CHECKPOINT 3.2

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The opportunity cost of berries increases as Crusoe produces more berries.

To see why, move Crusoe from row E to row D in Table 1.

The production of berries increases by 4 pounds to 30 pounds and production of fish decreases by 2.5 pounds to 10.5 pounds.

CHECKPOINT 3.2

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To increase his production of berries by 4 pounds he forgoes 2.5 pounds of fish.

His opportunity cost of 1 pound of berries is 5/8 of a pound of fish.

As Crusoe produces more berries, his opportunity cost of a pound of berries increases.

CHECKPOINT 3.2

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Practice Problem 2

The table shows Robinson Crusoe’s production possibilities.

If Crusoe is producing 10 pounds of fish and 21 pounds of berries, what is his opportunity cost of an extra pound of berries?

What is his opportunity cost of an extra pound of fish?

CHECKPOINT 3.2

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Solution

The figure graphs the data in the table and shows Crusoe’s PPF.

If Crusoe isproducing 10 pounds of fish and 21 pounds of berries, he is producing at point Z.

You can see that Z is a point inside Crusoe's PPF.

CHECKPOINT 3.2

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When Crusoeproduces 21 pounds of berries, he has sufficient time available to produce 15 pounds of fish at point F on his PPF.

To produce more berries, Crusoecan move from point Z toward point D on his PPF and forgo no fish.

His opportunitycost of a pound of berries is zero.

CHECKPOINT 3.2

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Practice Problem 1

The table shows an economy that produces education services and consumption goods.

If the economy currently produces 500 graduates a year and 2,000 units of consumption goods, what is the opportunity cost of economic growth?

CHECKPOINT 3.3

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Solution

If the economy produces 3,000 units of consumption goods and no graduates, no growth occurs.

By increasing the number of graduates to 500, resources expand and growth occurs.

The opportunity cost of growth is 1,000 units (3,000 minus 2,000) of consumption goods.

CHECKPOINT 3.3

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By increasing the number of graduates from 0 to 500, resources expand and economic growth occurs.

The opportunity cost of economic growth is 1,000 units (3,000 minus 2,000) of consumption goods.

CHECKPOINT 3.3

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Practice Problem 1

Tables show Tony’s and Patty’s production possibilities.

CHECKPOINT 3.4

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Who has a comparative advantage in producing snowboards? Who has a comparative advantage in producing skis?

CHECKPOINT 3.4

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Solution

The person with a comparative advantage in producing snowboards is the person who has the lower opportunity cost of producing a snowboard.

To produce 5 more snowboards, Tony must produce 10 fewer skis, so his opportunity cost of 1 snowboard is 2 skis.

To produce 10 more snowboards, Patty must produce 5 fewer skis. Her opportunity cost of 1 snowboard is ½ a ski.

Patty has the lower opportunity cost of producing a snowboard, so she has a comparative advantage in producing snowboards.

CHECKPOINT 3.4

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Tony’s production possibilities show that to produce 10 more skis he must produce 5 fewer snowboards. So his opportunity cost of producing a ski is 1/2 snowboard.

Patty’s production possibilities show that to produce 5 more skis, she must produce 10 fewer snowboards, so her opportunity cost of producing a ski is 2 snowboards.

Tony has the lower opportunity cost of producing a ski, so he has a comparative advantage in producing skis.

CHECKPOINT 3.4

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Practice Problem 2

Tony produces 10 snowboards and 5 skis. Patty produced 5 snowboards and 10 skis. If they specialize and trade, what are the gains from the trade?

CHECKPOINT 3.4

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Solution

Patty has a comparative advantage in producing snowboards, so she specializes in producing snowboards. She produces 20 snowboards a week.

Tony has a comparative advantage in producing skis, so he specializes in producing skis. He produces 50 skis a week.

Before specializing, they produce 15 snowboards (Patty’s 10 plus Tony’s 5) and 45 skis (Tony’s 40 plus Patty’s 5).

By specializing, they increase their total production by5 snowboards and 5 skis, which are the gains from trade.

They can share the gains by trading 1 ski for 1 snowboard.

CHECKPOINT 3.4