- CFA Exams
- CFA Level I Exam
- Topic 2. Economics
- Learning Module 8. Topics in Demand and Supply Analysis
- Subject 2. Elasticities of Demand
CFA Practice Question
Suppose the price of paper rises 10% and the quantity demanded falls 15%.
B. Will revenue rise, decline, or stay the same with the given change in price?
A. Is the price elasticity of demand for paper elastic, unit elastic, or inelastic?
B. Will revenue rise, decline, or stay the same with the given change in price?
Correct Answer: elastic; decline
Total revenue will fall. This is because the percentage decrease in the quantity demanded (15%) exceeds the percentage increase in the price (10%).
Price elasticity of demand is 15%/10% = 1.5. Since 1.5 > 1, demand is elastic.
Total revenue will fall. This is because the percentage decrease in the quantity demanded (15%) exceeds the percentage increase in the price (10%).
User Contributed Comments 6
User | Comment |
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steved333 | But would that effect be immediate, or a long-run effect? |
jamestavs | it depends on it being regular paper or toilet paper |
mrushdi | good answer |
pepper | don't need to do the maths. Why? Price Increase = Qty demand decrease = Elastic And if it is elastic, this mean increase price = greater decrease in qty demand = lower revenue. |
sgossett86 | My teacher pushed on us that when price elasticity is greater than one the demand is elastic. when less than one, inelastic. elastic demand means that an increase in price causes a decrease in total revenues. for inelastic demand an increase in price causes an increase in total revenues. always remember that. |
melmay11 | Thanks for sharing sgossett86 |