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1. The point of tangency between a ray and a TC curve represents: A. Minimum MC

ID: 1217941 • Letter: 1

Question

1. The point of tangency between a ray and a TC curve represents:

A. Minimum MC

B. Minimum AC

C. Maximum TC

D. Maximum AVC

2. Given an isocost drawn on a graph with capital on the vertical axis and labor on the horizontal axis. The vertical intercept is 15 units of capital and the horizontal intercept 5 units of labor. What is the slope of the isocost?

3. Given the capital on the vertical axis and labor on the horizontal axis, a decrease in the wage rate makes the:

a. isocost steeper

b. isocost flatter

c. isoquant steeper

d. isoquant flatter

4. Given the following table showing TP schedule:

Labor elasticity of production at L = 5 is equal to:

A. 2.5

B. 2.25

C. 1.5

D. 0.25

5. A perfectly competitive firm sells its product at P= $15. Its total cost function is as follows:

TC = 10 + 3Q – 2Q2 + Q3

The profit maximizing level of output is:

A. 2.77

B. 2.33

C. 3.52

D. 4.07

6.

Given the following demand function for widgets:

Q = 1.5 P-1.2 I-0.2

Where P is price and I is income. Given the above equation, widgets are considered to be:

A. normal goods

B. inferior goods

C. luxury goods

D. any of the above could be correct

K L Q 3 5 10 3 6 16 3 7 25

Explanation / Answer

(1) (B)

Any other curve is tangent to TC at its highest point at which AC is minimum.

(2) Slope of isocost = - Vertical intercept / Horizontal intercept = - 15/5 = - 3

(3) (b)

Lower eage rate makes isocost flatter.

(4) (B)

Labor elasticity of production = (Change in Q / Change in L) x (L / Q)

When L = 5, Q = 10 & when L = 6, Q = 16. So,

Labor elasticity = [(16 - 10) / (6 - 5)] x (6 / 16) = 6 x 6 / 16 = 2.25

Note: First 4 questions are answered.