Casio BF-100 - Page 15

2. Compound interest initial deposit
Example — How much principal must be initially deposited to accumulate $10,000 at the
end of 2 years if the annual interest rate is 4% and principal and interest are
compounded every 3 months?
OPERATION READ-OUT
“INT”
= | as
(period) 24am {| — B.}-
(interest rate) 4846 1.
(total amount of principal and interest) 10000 mI FY
(initial deposit) . ws Py
3. Compound interest investment
Example — What is the interest rate required to receive a return of $7,000 on a $4,000
investment if the money is invested for 10 years and principal and interest are
compounded annually?
-26-
sh
i
OPERATION
~.
o
READOUT...
“INT”
wy)
3
(period)
10
@)
0)
(principal)
4000
(total
amount
of
principal
and
interest)
7000
7000.
(interest
rate)
(urs)
(F%)
5.755705034
4. Compound interest period
Example
—
How
many
years
will
it
take
to
reach
$10,000
if
you
deposit
$500
at
5.4%
annual
interest
compounded
monthly?
OPERATION
READ-OUT
iny) &3
50)48128
(principal)
500
(total
amount
of
principal
and
interest)
10000
(period
....
number
of
months)
{ans}
(72)
(number
of
years)
128
4000.
“INT
(monthly rate)
10000.
i. Sa eae