Len’s body board factory rents equipment for shaping boards and hires students. Table 1 sets out Len’s total product schedule. Construct Len’s marginal product and average product schedules. Over what range of workers do marginal returns increase?

Use the following information to work Problems 3 to 6.

Len’s body board factory pays $60 a day for equipment and $200 a day to each student it hires. Table 1 sets out Len’s total product schedule.