Answer:
Alvin must invest approximately $2,364.50 today to have $18,000 in 20 years with a 12% interest rate compounded semiannually.
Explanation:
To determine how much Alvin must invest today to have $18,000 in 20 years with a 12% interest rate compounded semiannually, you can use the formula for compound interest:
FV = PV x ( 1 + ( r / n ) ) ^ nt
Where:
- FV is the future value (in this case, $18,000).
- PV is the present value or the amount Alvin needs to invest today.
- r is the annual interest rate (12% or 0.12 as a decimal).
- n is the number of times interest is compounded annually (semiannually, so n = 2).
- t is the number of years (20 years).
Now, plug in the values:
Simplify the exponent:
Finally, solve for PV
Using a calculator, calculate the present value:
PV ≈ \frac{18,000}{7.61225503} ≈ $2,364.50
So, Alvin must invest approximately $2,364.50 today to have $18,000 in 20 years with a 12% interest rate compounded semiannually.