(HP-65) Percent Functions

[Gamo]

Even more strange is that HP-65/67/97 Standard Pac or Business Pac doesn't

have the Business Percent on Pricing Calaculations or I called the Profit on Pricing.

HP 10BII got this Pricing function with Cost, Price, Markup and Margin where

user enter two known data and calculator find the answer of the remaining two answer.

I did try to program this function on HP-67 and here is the link

https://www.hpmuseum.org/forum/thread-12987.html

I also adapted this to work on the HP-41C too.

https://www.hpmuseum.org/forum/thread-14258.html

This program also work if user need to calculate [TAX-] and [TAX+]
simply by entering the tax rate at [C]
Enter Price including Tax on [B] and find Price without Tax on [A]


Gamo