The following table gives the total product schedule of labour. Find the corresponding average product and marginal product schedules of labour.

L	TPL
0	0
1	15
2	35
3	50
4	40
5	48

Why is the short run marginal cost curve ‘U’-shaped?

What do the long run marginal cost and the average cost curves look like?

The following table gives the average product schedule of labour. Find the total product and marginal product schedules. It is given that the total product is zero at zero level of labour employment.

The following table gives the marginal product schedule of labour. It is also given that total product of labour is zero at zero level of employment. Calculate the total and average product schedules of labour.