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Assignment Questions:
(Marks: 15)
Q1. Compute the percentage changes for the following (enter your responses as integers):
(3 Marks) [Ch. 1]
Initial Value
100
50
10
New Value
112
54.0
12.5
Percentage Change
Q2. Maps are a good non-economic example of using assumptions to make things simpler.
Which of the following are assumptions used to make maps useful?
(2 Marks) [Ch. 1]
Q3. Consider a student studying for a biology exam. Would you expect study time to be
subject to diminishing returns? Suppose productivity is measured as the anticipated increase
in the exam score. Construct a numerical example in which the first hour is twice as
productive as the second hour, which is twice as productive as the third hour, and so on up to
five hours of study. (2 Marks) [Ch. 2]
Q4. If the florist below shows the marginal benefit that a florist earns from keeping his store
open one more hour. The florist has a marginal cost of &70 per hour. For the last five weeks
he has stayed open 24 hours.
Hours
18
19
20
21
22
23
Marginal
Benefit per
Hour
100
80
70
60
30
20
24
10
a. Do you think the floristâ€™s decision to stay open 24 hours is optimal? Why?
(1.5 Marks) [Ch. 2]
b. How many hours do you advise him to stay open? Why? (1.5 Marks) [Ch. 2]
Q5. If the demand and supply curves for boxes are: D = 100 – 8P and S = 22 + 4P, where
P is the price of boxes.
a. Does the law of supply apply for the market of boxes? Why? (3 Marks)
b. Calculate the equilibrium quantity and price? (2 Marks)
[Ch. 3]