Casio fx-9750G PLUS User Manual
Page 373
345
P.6
19-6 Conversion between Percentage Interest
Rate and Effective Interest Rate
Press 5 (CNVT) in the Financial 1 screen to display the following input screen
for interest rate conversion.
n ......................
number of compoundings
I
% ................... interest rate
• {'
'
'
'
'
EFF}/{'
'
'
'
'
APR} ... {annual percentage rate to effective interest rate}/{effective
interest rate to annual percentage rate} conversion
k
k
k
k
k
Converting the Annual Percentage Rate (APR) to the
Effective Interest Rate (EFF)
EFF
=
n
APR/
100
1+
–1
× 100
n
Example
Calculate (to two decimal places) the effective interest rate for
an account paying an interest rate of 12%, compounded
quarterly.
In the set up screen, specify “
Fix2” for Display and then press J.
Perform the following key operations from the input screen.
ew
(
n
= 4)
bcw
(
I
% = 12%)
1
('
EFF
)
• The obtained value is assigned to
I
%.
k
k
k
k
k
Converting the Effective Interest Rate (EFF) to the Annual
Percentage Rate (APR)
APR
=
100
EFF
1+
–1
× n ×100
1
n