An artisanal soap manufacturer operates in an imperfectly competitive product market. The table below shows how the number of workers employed per hour affects the firm's total output of soap gift-boxes per hour and the price at which each box can be sold.
| Number of workers | Total output per hour | Price per box (£) |
|---|---|---|
| 1 | 10 | 15.00 |
| 2 | 18 | 14.00 |
| 3 | 25 | 13.00 |
| 4 | 31 | 12.00 |
| 5 | 35 | 11.00 |
The wage rate for each worker is £40 per hour. The firm has other fixed overhead costs of £80 per hour and no other variable costs.
Assuming the firm is a profit-maximiser, how many workers will it employ per hour?
2
3
4
5
