Texas Instruments BA II PLUS User Manual
Page 75
Other Worksheets
71
3.
To enter values for the known variables, press
# or " until the
variable you want is displayed, then key in a value, and press
!.
(Do not enter a value for the variable you wish to solve.)
•
Percent Change — Enter values for two of these three
variables:
OLD
,
NEW
, and
%CH
. Leave
#PD
set to 1.
•
Compound Interest — Enter values for three of these four
variables:
OLD
,
NEW
,
%CH
, and
#PD
.
•
Cost-Sell-Markup — Enter values for two of these three
variables:
OLD
,
NEW
, and
%CH
. Leave
#PD
set to 1.
4.
To compute a value for the unknown variable, press
# or " until the
variable you want is displayed and press
%. The calculator displays
the value.
Example: Computing Percent Change
First, determine the percentage change from a forecast amount of $658
to an actual amount of $700. Second, determine what the new amount
would be if it were 7% below the original forecast.
Answer:
$700 represents a 6.38% increase over the original forecast of
$658. A decrease of 7% would result in a new actual amount of $611.94.
Example: Computing Compound Interest
You purchased stock in 1995 for $500. Five years later, you sell the stock
for $750. What was the annual growth rate?
To
Press
Display
Select Percent Change/Compound
Interest worksheet.
& q
OLD=
0
Enter original forecast amount.
658
!
OLD=
658.00
Enter actual amount.
#
700
!
NEW=
700.00
Compute percent change.
# %
%CH=
6.38
Enter
-7 as percent change.
7
S !
%CH=
-7.00
Compute new actual amount.
" %
NEW=
611.94
To
Press
Display
Select Percent Change/Compound
Interest worksheet.
& q
OLD=
0
Enter stock purchase price.
500
!
OLD=
500.00
Enter stock selling price.
#
750
!
NEW=
750.00