Put it together, and the marginal revenue derivative is $20 - (q / 5). So if you make 50 units of a product, the marginal revenue derivative will be $20 - 50 / 5, or $10.

Put it together, and the marginal revenue derivative is $20 - (q / 5). So if you make 50 units of a product, the marginal revenue derivative will be $20 - 50 / 5, or $10.

So, the basic formula for calculating marginal revenue is As a simplified example, let's say that Apple can sell 10 iPhones if it charges $700.

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Marginal revenue is really simple to calculate, even though it can sound intimidating at first. The existing revenue is the total revenue of the series of items you want to measure; let's say it's ...