Distinction between change in quantity demanded and change in demand - Jamb Economics Past Questions and Answers

Question 1:

• JAMB 2019

If two commodities are unrelated, a change in the price of one will____________

A. Have effect on the quantity demanded of the other
B. Have no effect on the quantity demanded of the other
C. Increase the quantity demanded on the other
D. Decrease the quantity demanded on the other

Question 2:

• JAMB 2018

Let the quantity demanded in units of a particular commodity be represented as Qd = 80 - 2P, find the quantity demanded when P = ₦3.

A. 70
B. 47
C. 74
D. 40

Question 3:

• JAMB 2018

Which of the following matters may account for changes in demand?

I - changes in consumer preferences
II - changes in real income
III - changes in distribution of incomes
IV - changes in levels of taxation

A. I, II
B. II, III
C. I, III, IV
D. I, II, III, IV

Question 4:

• JAMB 2018

A commodity is defined as normal when its demand changes in the same direction as______

A. Income
B. Price
C. Taste
D. Preferences

Question 5:

• JAMB 2019

A major determinant of the demand for a luxury good is____________?

A. The price of other goods
B. The price of the good
C. Tastes and fashion
D. The income of consumers