What does mariginal revenue product refer to?

Marginal revenue product (MRP) refers to the additional revenue generated by employing one more unit of a factor of production, such as labor or capital, while holding other inputs constant. It is calculated by multiplying the marginal product of that input (the extra output produced) by the price at which the output is sold. MRP is an important concept in economics as it helps businesses determine the optimal level of resource allocation for maximizing profits. When the MRP of an input exceeds its cost, it is typically advantageous for firms to hire or invest in that input.