Final answer:
To find the worker's contribution to revenue, we must convert the marginal product of labor into revenue by multiplying it by the price per unit.
Step-by-step explanation:
Marginal product is the additional output of one more worker. To find the worker's contribution to revenue, we must convert the marginal product of labor, which is measured in bushels of apples, into revenue. This can be done by multiplying the marginal product by the price per bushel of apples. For example, if the marginal product of labor is 10 bushels of apples and the price per bushel is $2, then the worker's contribution to revenue would be $20.