In: Finance
You expect that you will need to replace your furnace in 4 years at a cost of $15,682. How
much must you save today in an account that pays 3.58% APR (compounded monthly) to exactly pay the $15,682 in 4 years?
Solution:
Compound Interest or Interest on Interest is the amount of interest on deposit or loan calculated based on both the initial principal amount and accumulated interest thereon from previous periods.
Formula for calculation of future value of saving to be made today : FV = PV × (1+r)n
Where: FV = Future Value
PV = Present Value
r = Annual Interest Rate
n = Number of periods
Given: FV. = $15,682
PV = ?
r = 3.58% p.a.
n = 4 Years
If compound interest is calculated on monthly basis then the formulas turns to
FV = PV × (1+r/12)12*n
By substituting values in formula, we get
$15,682 = PV x (1+ .0358/12)12*4
PV = $15,682 / (1.002983)48
PV. = $13,592.78
Therefore you must save today an amount of $13,592.78 in an account that pays 3.58% APR (compounded monthly) to exactly pay the $15,682 in 4 years to replace the furnace.