Percent Calculations - Texas Instruments TI-5015 Operating Manual

PERCENT CALCULATION
The percent key can be a time-saver when calculating percentages,
add-ons, discounts or ratios.
Percent
Key~;;;]
-When following multiplication, this key causes the last
number entered or the last printed number to be used by the calculator as a
percent value and prints a "%" symbol to the right of the number and
immediately prints the percentage result. When following division, this key
completes the division, automatically multiplies the result by 100 and prints
the result with a"%" to the right.
Percent Add-on [y~]
[ +] - When used following multiplication, the
percentage is calculated and printed followed by the sum of the percentage
and the principal amount printed with an "A" symbol to the right.
Percent
Discount@~
[
_....:J -
When used following multiplication, the
percentage is calculated and printed followed by the difference between the
percentage and the principal amount printed with a "D" symbol to the right.
Percentages
Example: 4% of 453 ~c i 8.12
Enter
Press
453
LXJ
4
Example: (17 + 32 - 8) x 15%
=
6.15
Enter Press
17
r-~f]
32
8
[~]
[Tl~Tj
ixJ
15
[ 0
i_o]
Print
453.x
4.%
18.12
Print
17.+
32.+
8.-
41.T
41.X
15.%
6.15
The automatic constant can also be used with percentage calculations.
Example: Find 2%, 15%, and 25% of 495.
Enter
Press
495
[KJ
2
[~o]
15
25
20
Print
495.x
2.%
9.9
15.%
74.25
25.%
123.75