You want to have 7,000 euros in your savings account after 6 years. If bank is ready to accrue 5% on this account, how much money should be invested?
At the end of 6 years, we want to have 7,000 euros in our savings bank account.
No of years = n = 6 years
Amount at the end of 6 years (investment period) = P1 = 7,000 euros.
The bank is ready to accrue 5% on this account. Since compounding frequency is not mentioned, we assume it to be 1 year.
Thus time periods = t = n*1 = 6.
(Note: if it was, say, quarterly compounded, then there were 4 periods in 1 year and t would have been 6*4 = 24 in that case)
Annual interest rate = i = 5%
Let the amount to be invested be P.
P1 = P*[(1 + i)^t]
7,000 = P*[1.05^6]
Thus, P = 7,000/[1.05^6] = 5,223.51 euros.
Thus, 5,223.51 euros should be invested now to get 7,000 euros at the end of year 6 at 5% rate in interest, compounded annually.
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