(Table: Total Product and Marginal Product for Energy Drinks) Use Table: Total Product and Marginal Product for Energy Drinks. The marginal product of labour for the seventh worker is _____ units per period. Total Product for Energy Drinks Labour per Day Number of Energy Drinks (per period) 0 0 1 10 2 30 3 70 4 90 5 100 6 107 7 110 8 105