Assignment Questions:      (Marks: 15)

Q1. Compute the percentage changes for the following (enter your responses as integers​):

(3 Marks) [Ch. 1]


Initial Value New Value Percentage Change

100 112

50 54.0

10 12.5


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 Marginal Benefit per Hour

18 100

19 80

20 70

21 60

22 30

23 20

24 10


a. Do you think the florist’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]