Casio BF-100 - Page 16

5.
Interest
calculation
Example
—
What
is
the
amount
of
interest
after
two
years
if
you
invest
$5,000
at
5%
annual
interest
and
interest
is
Compounded
every
3
months.
OPERATION
READ-OUT
“INT”
fo
ed
(ow) 53
(period)
ead)
ey
Sa
(interest
rate)
5e4g@m
[725]
|
500m
|
5000,
(principal)
(interest)
at
|
522.4305055,
:
6.
Conversion
from
nominal
interest
rate
to
effective
interest
rate
Example
—
What
is
the
effective
interest
rate
for
a
nominal
interest
rate
of
12%
annual
interest
compounded
every
3
months?
-~28-
OPERATION
READ-OUT
ar
2
(nominal
interest
rate)
12648
0%
hee
a
(assumed
principal)
100
FY
|
«100.7
(effective
interest
rate)
(ans)
(int)
12.55088099
7.
Conversion
from
effective
interest
rate
to
nominal
interest
rate
Example
—
What
is
The
nominal
interest
fate
for
an
effective
INLerest
rate
of
12.55%
compounded
every
3
months?
OPERATION
READ-OUT
ANTS
(wn
3
(period)
4
i)
0)
(assumed
Principal)
100
fi)
Py)
pees
total
amount
of
principal
and
120255
r=]
REY
(quarterly
interest
rate)
(ans)
73)
2.999798439
(annual
interest
rate)
H4g
11.99919376
~29~-
ewer,
:
=
S.
Ee
nr’
Serer
i< Ne epe