A monopoly uses a machine costing RM800 per day and the wage rate per worker is RM40 per day. There is no other cost of production. Output produced and average revenue are estimated to be as follows:

No. of worker Output per day (units) Average Revenue (RM)

1 10 200

2 20 180

3 30 160

4 40 140

5 50 120

6 60 100

7 70 80

8 80 60

a. Calculate Total Cost (TC) for each level of output.

b. Calculate Total Revenue (TR) for each level of output.