Please explain ​ You have an output (units) of 2, at a price of 30, and a marginal cost of 10. What is the marginal revenue? You have an output (units) of 3, at a price of 25, and a marginal cost of 15. What is the marginal revenue? Thank you!

Please explain

You have an output (units) of 2, at a price of 30, and a marginal cost of 10. What is the marginal revenue?

You have an output (units) of 3, at a price of 25, and a marginal cost of 15. What is the marginal revenue?

Thank you!