A retailer records monthly sales of memory cards at a price of £12 per card before and after the price of digital cameras falls.
| Price of digital camera | Price of memory card | Memory cards demanded each month |
|---|---|---|
| £320 | £12 | 4,800 |
| £280 | £12 | 5,400 |
Calculate the increase in the number of memory cards demanded each month.
Explain what happens to the demand curve for memory cards when the price of digital cameras falls.
82 exam-style questions on OCR GCSE Economics 2.2 Demand, covering 2.2.1 What is demand, 2.2.2 Draw a demand curve using data, 2.2.3 Explain a demand curve, 2.2.4 Shifts and movements of the demand curve, 2.2.5 Causes and consequences of demand changes, 2.2.6 Price elasticity of demand, 2.2.7 Draw demand curves of different elasticity, and 2.2.8 Importance of price elasticity of demand. Each one has a worked solution and a mark scheme showing where the marks go.