Output 112 D Per ■■■■■■■■ Month 80 Total Product 60 B A Output (a) Labor Per Month Per 30 Worker Per Month Average Product 20 10 Marginal Product b Labor Per Month Output Per Month Labor Per Month Labor Per Month Marginal Product Average Product Total Product 1 3 4 8 10 20 30 60 112 E A B C D (a) (b) Output Per Worker Per Month 80 O