Question

1.) Suppose if the price of a good is $12, the quantity demanded is 50 units; when the price is $10, the quantity demanded is 100 units. Use the midpoint approach to compute the price elasticity of demand. Is demand at this point relatively responsive or relatively unresponsive to price changes?

2.) For this exercise you will need to first build a graph to these specifications: Draw a downward sloping demand curve with vertical intercept (0,4) and horizontal intercept (8,0). Label the price above which the demand is always elastic. Label the portion of the curve at which a decrease in price will lead to increased revenue. If the price is currently $3, will revenue rise or fall if price drops to $2?

Answer #1

Question 1

Calculate the price elasticity of demand -

P1 = $12

Q1 = 50 units

P2 = $10

Q2 = 100

Ed = -3.67

**The price elasticity of
demand as per midpoint approach is -3.67.**

The value of price elasticity of demand is greater than 1. When value of price elasticity of demand is greater than 1, demand is said to be elastic.

So, at this point demand is elastic.

When demand is elastic, quantity demanded is relatively responsive to the price changes.

**Thus, at this point, demand
is relatively responsive to price changes**.

16. At a price of $4, quantity demanded is 100; and at a price
of $6, quantity demanded is 120. Using the midpoint formula, the
price elasticity of demand is ________ and demand is ________.
A) 0.1; inelastic
B) 0.45; inelastic
C) -2.2; elastic
D) -10; elastic

1. When elasticity of demand is equal to one and the change in
the quantity demanded and the change in price are exactly
proportional. This type of elasticity is described as ________.
A. elastic
B. inelastic
C. unitary elastic
2. What happens to total revenue (TR) if the price rises on a
product with demand that is price elastic?
A. Total revenue will rise.
B. Total revenue will remain the same.
C. Total revenue will fall.

1.
If demand is inelastic, the percentage change in price is
greater than the resulting percentage change in quantity
demanded
a. True
b. False
2.
Price elasticity is 1 at the midpoint of a linear
downward-sloping demand curve.
a. True
b. False

A price change causes the quantity demanded for a good to
increase by 20 percent and the total revenue of that good decreases
by 15 percent. What can you say about the price elasticity of
demand at this point.
It's elastic
It's inelastic
It's unitary elastic
It's perfectly elastic

1.If price rises by 20% and quantity demanded of rice falls by
100 pounds, the elasticity of demand is : (1 point)
a. greater than 1
b. equal to -5
c. equal to -20
d. cannot be determined without additional information.
2.If quantity supplied responds only slightly to a change in
price, then: (1 point)
a. Supply is elastic
b. An increase in price will shift the supply curve to a large
extent
c. Supply is inelastic
d. Supply is...

Price Quantity Demanded $0 50 $2 40 $4 30 $6 20 $8 10 a. Using
the midpoint method, calculate the price elasticity of demand
between $4 and $6? b. Between two quantities of 30 to 20, is demand
elastic, inelastic, or unit elastic? Show the work.

A price change causes the quantity demanded of a good to
increase by 15%, while the total revenue of that good increases by
10%.
True or False: The demand curve is elastic in this region.
True
False

Consider the following combinations of price and quantity
demanded for an unnamed good. These questions ask you to perform
several percentage change an elasticity calculations. When
calculating percentage change, some questions ask you to use the
traditional formula and some ask you to use the midpoint formula.
For clarity, these two formulas are given below. The values you
calculate should be between -100 and 100 (not -1 to 1). Please
include the sign (if negative) in all of your responses....

When the price of good "X" increases 20 percent (+20%), Harry
decreases his quantity demanded of "X" by 25 percent while Meghan
decreases her quantity demanded of "X" by 15 percent. Harry's
demand for good "X" is (relatively inelastic / unitary elastic /
relatively elastic) and Meghan's demand for good "X" is (relatively
inelastic / unitary elastic / relatively elastic).
A. Relatively inelastic; relatively
inelastic.
B. Relatively inelastic; relatively
elastic.
C. Unitary elastic; relatively
elastic.
D. Relatively elastic; relatively
elastic.

A price change causes the quantity demanded of a good to
increase by 20 percent, while the total revenue of that good
increases by 15 percent. Is the demand curve elastic or inelastic?
Explain.

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