ECO-4 Lecture Notes - Lecture 11: Marginal Cost, Comparative Advantage, Demand Curve

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11 Sep 2020

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Marginal benefit : value of one more unit. Measure benefit by maximum price that is willingly paid for another unit of the good or service. Individual demand : price of a good & the quantity demanded by one person. Market demand: relationship between the price of a good & the quantity demanded by all buyers. Horizontal sum of the individual demand curves. Formed by adding quantities demanded by individuals @ each price. Marginal benefit entire society : marginal social benefit. Market demand curve = marginal social benefit curve (msb) Excess of benefit received from a good over the amount paid for it. When people buy something for less than it is worth to them. Value of a good minus price paid for it. The area under the demand curve and above the price paid, up to the quantity bought. Supply cost curve = marginal cost curve.

Related Questions

1. Consumer surplus is not

a. the value of a good minus the price paid for it, summed over the quantity bought.

b. greater on the first unit sold than on the last unit sold.

c. greater on the last unit sold than on the first unit sold.

d. equal to the area below the demand curve and above the market price line.

2. The demand curve for hamburgers is the same as the

a. marginal benefit curve for hamburgers.

b. marginal cost curve of hamburgers.

c. consumer surplus curve of hamburgers.

d. All of the above.

3. A supply curve is

a. the same as a production possibilities frontier.

b. a marginal social benefit curve.

c. a marginal benefit curve.

d. a marginal cost curve.

e. a downward-sloping curve.

4. The opportunity cost of producing one more hot dog is $1.00. The price of a hot dog is $1.50. The producer surplus from selling one more hot dog is

a. $1.00

b. $1.50

c. $0.50

d. zero.

e. $2.50

5. Markets may not achieve an efficient allocation of resources when there are

a. external costs.

b. monopolies.

c. taxes.

d. all of the above.

The market demand curve

a. slopes upward.

b. is found by vertically adding the individual demand curves.

c. represents the sum of the quantities demanded by all the buyers at each price of the good.

d. represents the sum of the prices that all the buyers are willing to pay for a given quantity of the good.

When we move along a given demand curve,

all nonprice determinants of demand are held constant.

only price is held constant.

all determinants of quantity demanded are held constant.

d. income and price are held constant.

When the price of a good or service changes,

	a.	there is a movement along a given demand curve.
	b.	the demand curve shifts in the opposite direction.
	c.	the supply curve shifts in the opposite direction.
	d.	the demand curve shifts in the same direction.

1. The addition to the revenue obtained from firing an additional unit of labour is:

a. marginal revenue product

b. marginal physical product of labour

c.total product

d. marginal factor cost

2. The firm's demand curve for labour is:

a. the demand curve for the good produced divided by the price of the good

b.the marginal revenue product curve for labour

c.the marginal physical product curve for labour divided by the good

d. the marginal physical product curve for labour multiplied by the price of labour

3. If the price of the product is $1.50 and the marginal factor cost of an additional unit of input is $105, how many units of labour should be hired?

Labor input (workers/day)_______________________________-total physical product (output/day)

10 __________________________________________________500

11__________________________________________________600

12__________________________________________________690

13___________________________________________________760

14___________________________________________________800

a. 14

b.12

c.13

d.11

4. the price elasticity of demand for labour equals

a. the change in quantity demanded of labour divided by the change in the price of labour

b. the slope of the demand curve for labour

c. the percentage change in the price of labour divided by the percentage change in the supply of labour

d. the per cent change in the quantity demanded of labour divided by the percentage change in the price of labour

5. We would expect that a rise in labour supply will have a proportionately larger effect on the market wage rate when:

a. the supply for labour is elastic

b.the demand for labour is unitary elastic

c.the demand for labour is elastic

d.the demand for labour is inelastic

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ECO-4 Lecture Notes - Lecture 11: Marginal Cost, Comparative Advantage, Demand Curve

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