HP (Hewlett-Packard) Calculator HP 12C Financial Calculator User Manual

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File name: hp 12c pt_user's guide_English_HDPMF123E27 Page: 31 of 275
Printed Date: 2005/8/1 Dimension: 14.8 cm x 21 cm
Section 2
Percentage and Calendar
Functions
Percentage Functions
The hp 12c platinum includes three keys for solving percentage problems:
b
,
à
,
and
Z
. You don’t need to convert percentages to their decimal equivalents; this
is done automatically when you press any of these keys. Thus, 4% need not be
changed to 0.04; you key it in the way you see and say it: 4
b
.
Percentages in RPN Mode
In RPN mode, to find the amount corresponding to a percentage of a number:
1. Key in the base number.
2. Press \.
3. Key in the percentage.
4. Press b.
For example, to find 14% of $300:
Keystrokes
(RPN mode)
Display
300
300.
Keys in the base number.
\
300.00
Pressing
\
separates the next
number entered from the first number,
just as when an ordinary arithmetic
calculation is performed.
14
14.
Keys in the percentage.
b
42.00
Calculates the amount.
If the base number is already in the display as a result of a previous calculation,
you should not press
\
before keying in the percentage — just as in a chain
arithmetic calculation.

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