Answer: Average product is increasing
Step-by-step explanation:
Average product is the total product divided by the number of inputs. The marginal product is the additional output that is produced as a result of employing an extra unit of the variable factor input.
When the average product is rising, the marginal product is above the average product and when th average product is reducing, the marginal product is below the average product. From the question, when the average product is 10, marginal product is 15. It shows that the average product is increasing.