The table below shows the production costs for a specialist medical device manufacturer producing titanium orthopaedic implants.
| Quantity of implants (QQQ) | Average cost per unit (ACACAC) |
|---|---|
| 78 | £415 |
| 79 | £408 |
| 80 | £412 |
| 81 | £420 |
| 82 | £431 |
If the firm decides to increase its output from 79 to 80 implants, what is the marginal cost of producing the 80th implant?
£4
£1,060
£728
£32,960
