Let's ume that a firm's total weekly costs are as follows: Salaries = $50,000; Supplies = $4,000; Rent =?

Rent = $2,200. In addition, the owners have invested $80,000 of their own money into the business. This could have earned them interest of $100 per week if they had chosen to put it into a bank instead of investing it into their business. What are the firm's explicit and implicit costs?