HP 12C Financial calculator - Manual (Page 26)

26
File name: hp 12c_user's guide_English_HDPMBF12E44 Page: 26 of 209
Printered Date: 2005/7/29 Dimension: 14.8 cm x 21 cm
Section 2
Percentage and Calendar
Functions
Percentage Functions
The hp 12c 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: 4b.
Percentages
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 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.