The world of microeconomics and business decision-making hinges upon a key concept: marginal cost. In the simplest terms, marginal cost represents the expense incurred to produce an additional unit of ...

John Egan is a veteran personal finance writer whose work has been published by outlets such as Bankrate, Experian, Newsweek Vault and Investopedia. Michael Adams is a former Cryptocurrency and ...

To calculate your average trade price, add all purchase prices and divide by the number of trades. Use weighted average trade price calculation if share quantities vary per purchase. Weighted averages ...