Answer:
John should continue with his catering business because accounting and economic profits from pizza catering are more than his annual salary from teaching.
Step-by-step explanation:
John can earn from teaching $80,000 annually
For starting business of pizza catering John will incur following expense
Tuition for catering skills $2,000
Opportunity cost for withdrew of funds ($110,000 * 5%) $5,500
Interest for Borrowing from friend ($50,000 * 6%) $3,000
Opportunity cost of Rent from premises $12,000
Total opportunity cost $22,500
Revenue:
Revenues from Pizza $400,000
Revenue from Beverages $190,000
Total revenue $590,000
Expenses:
Cashier wages ($55,000 * 2) $110,000
Pizza ingredients $50,000
Manager salary $75,000
Pizza bakers wages ($60,000 * 3) $180,000
Equipment $10,000
Total Expense $425,000
Net Income - Accounting Profit ($590,000 - $425,000) = $165,000
Less opportunity cost $22,500
Economic Profit $142,500