CAIE A-Level Economics 1.2.3 Ceteris paribus

CAIE A-Level Economics 1.2.3 Ceteris paribus
Cambridge International AS & A Level Economics 9708 syllabus for exams in 2026, 2027 and 20282026–2028

Practise applying ceteris paribus to demand cases, explaining when price and quantity changes are affected by other variables.

How this is tested

  • apply ceteris paribus by holding non-price demand factors constant
  • explain why demand evidence may conflict when income or tastes also change

Question 4

[Maximum number: 1]

The price of a good rises by 5% and the quantity of it demanded rises by 3%. At the same time, the incomes of consumers of the good rise by 4%.

The law of demand appears not to be working in this case.
What is the most likely explanation?

A

Other things did not remain equal.

B

The demand for the good was price inelastic.

C

The real price of the good fell.

D

The time period was the very short run.