Answer:
The amount to be invested is $78,352.62
Explanation:
PV=FV/(1+r)^n
PV is present value and unknown
FV is the future value of $100000
rate of return , r is 5%
n is the number of years given as 5
PV=100000/(1+0.05)^5
PV=$78352.62
The investor would have invest today $78352.62 in order to have in 5 years the sum of $100000 at compound interest of 5% per year.
The pv can also be computed using excel with formula pv(rate,nper,,-fv) as it is found in the attached spreadsheet.
It is better to know the two methods so that one can confirm answer from one method with the other method