(Related to Checkpoint 5.2)
(Compound
interest with non-annual
periods)
You just received a bonus of
$3,000.
a. Calculate the future value of
$3,000,
given that it will be held in the bank for
5
years and earn an annual interest rate of
6
percent.b. Recalculate part
(a)
using a compounding period that is (1) semiannual and (2) bimonthly. c. Recalculate parts
(a)
and
(b)
using an annual interest rate of
12
percent.
d. Recalculate part
(a)
using a time horizon of
10
years at an annual interest rate of
6
percent.e. What conclusions can you draw when you compare the answers in parts
(c)
and
(d)
with the answers in parts
(a)
and
(b)?
a. What is the future value of
$3,000
in a bank account for
5
years at an annual interest rate of
6
percent?
$nothing
(Round to the nearest cent.)
a)
FV = PV * (1+r)^n
= $3,000 * (1 + 6%)^5
= $4,014.68
Future value = $4,014.68
b)
Semiannual compounding:
FV = PV * (1+r/n)^(n*t)
= $3,000 * (1 + 6% / 2)^(5*2)
= $4,031.75
Future value = $4,031.75
bimonthly compounding:
FV = PV * (1+r/n)^(n*t)
= $3,000 * (1 + 6% / 6)^(6*5)
= $4,043.55
Future value = $4,043.55
c)
FV = PV * (1+r)^n
= $3,000 * (1 + 12%)^5
= $5,287.03
Future value = $5,287.03
Semiannual compounding:
FV = PV * (1+r/n)^(n*t)
= $3,000 * (1 + 12% / 2)^(5*2)
= $5,372.54
Future value = $5,372.54
bimonthly compounding:
FV = PV * (1+r/n)^(n*t)
= $3,000 * (1 + 12% / 6)^(6*5)
= $5,434.08
Future value = $5,434.08
d)
FV = PV * (1+r)^n
= $3,000 * (1 + 6%)^10
= $5,372.54
Future value = $5,372.54
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