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Section 2: Percentage and Calendar Functions 35
File name: hp 12c pt_user's guide_English_HDPMF123E27 Page: 35 of 275
Printed Date: 2005/8/1 Dimension: 14.8 cm x 21 cm
Percent of Total in RPN Mode
In RPN mode, to calculate what percentage one number is of another:
1. Calculate the total amount by adding the individual amounts, just as in a
chain arithmetic calculation.
2. Key in the number whose percentage equivalent you wish to find.
3. Press Z.
Example:
Last month, your company posted sales of $3.92 million in the U.S.,
$2.36 million in Europe, and $1.67 million in the rest of the world. What
percentage of the total sales occurred in Europe
?
Keystrokes
(RPN mode)
Display
3.92
\
3.92
Keys in the first number and
separates it from the second.
2.36
+
6.28
Adds the second number.
1.67
+
7.95
Adds the third number to get the
total.
2.36
2.36
Keys in 2.36 to find what percentage
it is of the number in the display.
Z
29.69
Europe had nearly 30% of the total
sales.
In RPN mode, the hp 12c platinum holds the total amount inside after a percent of
total is calculated. Therefore, to calculate what percentage another amount is of
the total:
1. Clear the display by pressing O.
2. Key in that amount.
3. Press Z again.
For example, to calculate what percent of the total sales in the preceding example
occurred in the U.S. and what percent occurred in the rest of the world:
Keystrokes
(RPN mode)
Display
O
3.92
Z
49.31
The U.S. had about 49% of the total
sales.
O
1.67
Z
21.01
The rest of the world had about 21%
of the total sales.