Question
Complete the following table, on the assumption that for additional unit of the variable factor, marginal product decreases by 5 units of output.
| Units of Labour | TP | AP | MP |
| 1 | __ | __ | __ |
| 2 | __ | __ | __ |
| 3 | __ | __ | __ |
| 4 | __ | __ | -5 |