Pricing Calculations for HP-12C
01-25-2021, 11:41 AM
Post: #1
 Gamo Senior Member Posts: 738 Joined: Dec 2016
Pricing Calculations for HP-12C
The HP-12C Solutions Handbook provided the Pricing Calculations that provided

the keystroke sequences readily make on various problems.

I remaked the sequences so that it is easier to read the instructions.

Key Sequences based on various type of problem.

(Cost, Price) → Markup ►Cost [ENTER] Price [△%]
(Cost, Price) → Margin ►Price [ENTER] Cost [△%] [CHS]
(Cost, Markup) → Price ►Cost [ENTER] Markup [%] [+]
(Cost, Margin) → Price ►Cost [ENTER] 1 [ENTER] Margin [%] [-] [÷]
(Price, Markup) → Cost ►Price [ENTER] 1 [ENTER] Markup [%] [+] [÷]
(Price, Margin) → Cost ►Price [ENTER] Margin [%] [-]

Example: FIX 2
Price is 100 and Margin is 45%
What is the Cost and Markup?

100 [ENTER] 45 [%] [-] display 55.00 // Answer Cost
55 [ENTER] 100 [△%] display 81.82 // Answer Markup

Gamo
01-25-2021, 01:26 PM
Post: #2
 albertofenini Senior Member Posts: 594 Joined: Mar 2014
RE: Pricing Calculations for HP-12C
Nice !!!
It should work on an HP80 and on an HP22 as well, right ?
take care !

Edoardo & Alberto
01-26-2021, 10:00 AM (This post was last modified: 01-26-2021 10:04 AM by Gamo.)
Post: #3
 Gamo Senior Member Posts: 738 Joined: Dec 2016
RE: Pricing Calculations for HP-12C
ํalbertofenini thanks for the interest on this Pricing Calculations Key Sequences

Yes this will work on any RPN calculator that have [%] and [△%] functions.

Especially work for HP-70, 80, 22 and all of the Financial Calculator including the Scientific Calculator as well.

These steps is in best use when print it out and cut to small size paper or tape to back of the calculator ready at anytime.

I have uploaded the video clip demostraded on how to use it but this one is for Casio calculator.
Similar approach work with RPN calculator.

Video Clip Demostration: https://youtu.be/bG7N1ssm8Xs

Gamo
02-11-2021, 09:43 PM
Post: #4
 Pälzer Junior Member Posts: 13 Joined: Feb 2021
RE: Pricing Calculations for HP-12C
Nice, thank you Gamo,

I have adapted the steps to my HP 48sx:

(Cost, Price) → Markup ►Cost [ENTER] Price [%CH]
(Cost, Price) → Margin ►Price [ENTER] Cost [%CH] [CHS]
(Cost, Markup) → Price ►Cost [ENTER] [ENTER] Markup [%] [+]
(Cost, Margin) → Price ►Cost [ENTER] 1 [ENTER] [ENTER] Margin [%] [-] [÷]
(Price, Markup) → Cost ►Price [ENTER] 1 [ENTER] [ENTER] Markup [%] [+] [÷]
(Price, Margin) → Cost ►Price [ENTER] [ENTER] Margin [%] [-]

Example: FIX 2
Price is 100 and Margin is 45%
What is the Cost and Markup?

100 [ENTER] [ENTER] 45 [%] [-] display 55.00 // Answer Cost
55 [ENTER] 100 [%CH] display 81.82 // Answer Markup

8years elementary school and 2y business school, no bachelor or master;
but always interested in simple mathematics and calculators
02-13-2021, 02:53 PM
Post: #5
 Eddie W. Shore Senior Member Posts: 1,582 Joined: Dec 2013
RE: Pricing Calculations for HP-12C
Quick and easy solutions, I like it, Gamo!

I like how the percent key works in the RPN calculators.
02-14-2021, 01:39 AM
Post: #6
 Gamo Senior Member Posts: 738 Joined: Dec 2016
RE: Pricing Calculations for HP-12C
For calculator like Casio that calculate Percent this way.

Example: To add 7% to 100

100 [x] 7 [%] display 7 [+] display 107

And calculator that have Constant Funtion that display [k] when press
arithmetic twice.

These keys steps also find various Pricing Calculations problem.

(Cost, Price) → Markup ►Cost [-] [-] Price [%]
(Cost, Price) → Margin ►Cost [-] Price [%]
(Cost, Markup) → Price ►Cost [x] Markup [%] [+]
(Cost, Margin) → Price ► Cost [+] Margin [%]
(Price, Markup) → Cost ► Price [+] Markup [+/-] [%]
(Price, Margin) → Cost ► Price [x] Margin [%] [-]

Also this can solve for the "Tax Exclusive" or Price without Tax

Example: Tax is 7% Price include tax is 100 What is price without tax?

100 [+] 7 [+/-] [%] display answer 93.46 [-] display tax amount 6.54

To check answer simply add them up 93.46 + 6.54 = 100

Remark:
Above calculations using the Casio MS-20UC

Gamo
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