You need to have $72,000 in 9 years. You can earn an annual interest rate of 2 percent for the first 2 years, 3 percent for the next 3 years, and 4 percent for the final 4 years. How much do you need to deposit today?

You need to have $72,000 in 9 years. You can earn an annual interest rate of 2 percent for the first 2 years, 3 percent for the next 3 years, and 4 percent for the final 4 years. How much do you need to deposit today