Answer:
i= 8% annual compunded
Explanation:
Giving the following information:
Your parents will retire in 18 years. They currently have $250,000, and they think they will need $1,000,000 at retirement.
We need to calculate the interest rate required to reach the $1 million goal in 18 years without any additional deposit.
FV= PV*(1+i)^n
Isolating i:
i= [(FV/PV)^(1/n)] - 1
i= [(1,00,000/250,000)^(1/18)] - 1= 0.08
i= 8% annual compunded