Look at your schedule in answer to 22.1(i) and answer the following:

(a) What are the total costs at production levels of (i ) 4,000 units, (ii ) 7,000 units, (iii) 9,000 units, (iv) 5,500 units? You will have to deduce this amount as it is not shown as a figure on the schedule.

(b) What is the total revenue at (i ) 3,000 units, (ii ) 8,000 units, (iii) 5,500 units?