The table below shows how a firm's total and average product change, in the short run, with different inputs of labour.
| Number of workers | Total product | Average product |
|---|---|---|
| 3 | 90 | 30 |
| 4 | 160 | 40 |
| 5 | 250 | 50 |
| 6 | 318 | 53 |
| 7 | 350 | 50 |
Diminishing marginal returns to labour set in when the firm employs
4 workers
5 workers
6 workers
7 workers
156 exam-style questions on AQA A Level Economics 1.4 Production, costs and revenue, covering 1.4.1 Production and productivity, 1.4.2 Specialisation, division of labour and exchange, 1.4.3 The law of diminishing returns and returns to scale (A-level only), 1.4.4 Costs of production, 1.4.5 Economies and diseconomies of scale, 1.4.6 Marginal, average and total revenue, 1.4.7 Profit, and 1.4.8 Technological change (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.