Mr Nur's Juice Bar has the following cost schedules:

Quantity Variable cost Total cost

0 vats of juice $0 $30

1 20 50

2 35 65

3 55 85

4 80 110

5 100 130

6 135 165

i. Calculate average variable cost, average total cost and marginal cost for each quantity.

ii. Graph all three curves. What is the relationship between the marginal-cost curve and the

average-total-cost curve? Between the marginal-cost curve and the average-variable-cost

curve? Explain.