Answer:
Annual Rate=7.35%
Explanation:
Calculation for the annual interest rate must they earn to reach their goal
Number of years =27
PV =280,000
FV =1,900,000
Using this formula
Annual Rate=(FV/PV)^(1/n)-1
Let plug in the formula
Annual Rate=(1,900,000/280,000)^(1/27)-1
Annual Rate=6.7857^(1/27)-1
Annual Rate=1.07349-1
Annual Rate=0.0735
Annual Rate=7.35%
Therefore the annual interest rate must they earn to reach their goal will be 7.35%
