Walter used to work as a high school teacherfor $40,000 per year but quit in order to start his own painting business. Toinvest in his painting business, he withdrew $20,000 from his savings, whichpaid 3 percent interest, and borrowed $30,000 from his uncle, whom he pays 3percent interest per year. Last year Walter paid $25,000 for supplies and hadrevenue of $60,000. Walter asked Tyler the accountant and Greg the economist tocalculate his painting business’s costs.