Economics (AS & A Level) · Oct / Nov 2023 · Paper 11 · Question 13

In the diagram, S₁ is the supply curve and D₁ is the initial demand for facemask X. A rival firm produces facemask Y, which is a close substitute. What would cause the demand curve to shift to D₂?

1. Aa decrease in the costs of the materials to make facemask X
2. Ba decrease in the costs of the materials to make facemask Y
3. Can increase in the price of facemask X
4. Dan increase in the price of facemask Y

As printed in the paper