1. Tigris produces only two products: tennis balls and tennis racquets. Each worker comes with a fixed quantity of materials and capital, and the economy's labour force is fixed at 100 workers. The following table indicates the amounts of balls and racquets that can be produced daily with various quantities of labor) (5 marks)
2. Can Tigris produce 200 balls and 60 racquets?
3. What is the total cost of producing 150 balls?
4. What is the total cost of producing 75 racquets?
5. If Tigris is currently producing 230 balls, what is the cost of an additional 20 balls?

Number of Workers	Daily production of Tennis Balls	Number of Workers	Daily Production of Racquets
0	0	0	0
20	80	20	30
40	150	40	50
60	200	60	65
80	230	80	75
100	250	100	80

1. If Tigris is currently producing 30 racquets, what is the cost of an additional 20 racquets?