Table 13-2 Number of Workers (L.) Total Output (0) Marginal Product (MP) 300 500 650 17. Refer to Table 13-2. What is the marginal product of the third worker? a. 50 units b. 300 units c. 200 units d. 100 units 18. If Kevin's children run a lemonade stand for a day and sell 200 glasses of lemonade at $0.50 each, their total revenues are a. $199.50. b. $100. c. $200. d. $400. 19. Ryan sells 200 plastic ball point pens at $0.50 each. His total costs are $25. His profits are a. $25. b. $75. c. $175. d. $100. by Cognero. Pag