OCR A-Level Business (H431) H431
Introduction to Business
Business Objectives and Strategy
External Influences
Accounting and Finance
Human Resources
Marketing
Operations Management
Marketing
Cross elasticity and advertising elasticity of demand
- 1 thing to know
- Components 01, 02 and 03
Overview
Recall questions on cross elasticity of demand, its formula, substitutes, complements and unrelated products, calculating it and using it when rivals change prices or when selling complements, advertising elasticity of demand, calculating and interpreting it, and why it can understate a campaign or be hard to measure.
What you need to know
Answer each one before you reveal it.
Questions from this subtopic
Each one with the model answer underneath.
- 1
What is cross elasticity of demand?
Model answer
Cross elasticity of demand measures how the quantity demanded of one product responds to a change in the price of another.
- 2
State the formula for cross elasticity of demand.
Model answer
Cross elasticity of demand is the percentage change in quantity demanded of one product divided by the percentage change in the price of another.
- 3
What does a positive cross elasticity of demand indicate?
Model answer
It indicates that the two products are substitutes, because a rise in one's price raises demand for the other.
- 4
What does a negative cross elasticity of demand indicate?
Model answer
It indicates that the two products are complements, because a rise in one's price reduces demand for the other.
- 5
A rival raises its coffee price by 8% and a business's own coffee sales rise by 4%. Calculate the cross elasticity of demand.
Model answer
The cross elasticity is 4% ÷ 8%, which is +0.5.
- 6
Printer prices fall by 10% and demand for ink cartridges rises by 5%. Calculate the cross elasticity of demand and state the relationship.
Model answer
The cross elasticity is 5% ÷ −10%, which is −0.5, so printers and cartridges are complements.
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