Answer:
marginal resource cost is equal to their MRP
Explanation:
A business's profit will maximize when its marginal resource cost equals its marginal revenue product.
Marginal revenue product calculated by multiplying the marginal physical product (MPP) times the marginal revenue (MR), e.g. an additional worker can produce 10 units and each unit costs $10, MRP = 10 x $10 = $100
Marginal resource cost is the cost of using an additional unit of input, e.g. cost of hiring an additional worker.