Final answer:
The explicit costs of Betty's tutorial school include the rental income given up, interest on a loan, total teacher salaries, and the purchase of furniture. The implicit costs include the opportunity cost of Betty's annual salary and economic depreciation of furniture. The economic profit can be calculated by subtracting both explicit and implicit costs from the total after-tax revenue.
Step-by-step explanation:
(a) The explicit costs of Betty's tutorial school in the coming year can be calculated as follows:
- Annual rental income given up: $85,000
- Interest on loan: $50,000 * 3% = $1,500
- Total salary paid to teachers: $95,000
- Purchase of furniture: $250,000
(b) The implicit costs of Betty's tutorial school in the coming year can be calculated as follows:
- Opportunity cost of Betty's annual salary as an accountant: $65,000
- Economic depreciation of furniture: $7,500
(c) To calculate the economic profit, we need to subtract both the explicit and implicit costs from the total after-tax revenue:
Economic profit = Total after-tax revenue - Explicit costs - Implicit costs
Economic profit = $800,000 - ($85,000 + $1,500 + $95,000 + $250,000) - ($65,000 + $7,500)