Lessons on Manajerial Economics 1. Mr. toni has $70000 to invest. He wants to receive an annual income of $5000. He can invest his funds by buying government bonds at an interest rate of 6% or 8.5% for other securities but with a higher risk. how much should he invest in government bonds in order to minimize the risk but the income he received was still $5000. 2. a student plans to invest for 10 years at an interest rate of 12% per year. how much he had to invest in order to earn an interest value of 3 million 3. Find the present value of $100 maturing in two years at discount rates of 5 percent, 10 percent, and 20 percent