You want to accumulate $5,000 in five years by making a deposit of X today and another deposit of 3X in two years. If the effective rate of interest is 5%. Determine X?
rate of interest = r = 5%
Deposit today = C0 = X
Deposit in year 2 = C2 = 3X
year | 0 | 1 | 2 | 3 | 4 | 5 |
Deposit | X | 3X |
Future value of the deposits = FV = $5000
Future value of the deposit C0 at year 5 = FV0 = X*(1+5%)5 = 1.2762815625*X
Future value of deposit C2 at year 5 = FV2 = 3X*(1+5%)3 = 1.157625*3X = 3.472875*X
FV = FV0 + FV2 = 1.2762815625*X + 3.472875*X = 4.7491565625*X = 5000
X = 5000/4.7491565625 = 1052.81852349967
Answer -> X = $1052.82 (Rounded to two-decimal places)
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