Help needed

01032014, 01:12 PM
Post: #1




Help needed
Hi all. Im new here. My 48g sadly passed away after many years of great service  so i purchased a HP Prime. To my own supprise I realised the Prime does not have the Eq Lib.
But my biggest need is an app to calculate "selling price" "margin" or "cost price" with any two of the variables availible! Untill i have learnt the programming is there someone that could help with the source code? Regards 

01032014, 03:13 PM
Post: #2




RE: Help needed
(01032014 01:12 PM)Luano Wrote: But my biggest need is an app to calculate "selling price" "margin" or "cost price" with any two of the variables available! Until i have learnt the programming is there someone that could help with the source code? Regards The easiest way to do this is to use the Solve App. Enter the formula C=S*(100M)/100 in the symbolic view and then press the Num key to enter the numeric view, where you can enter the known values and press Solve to find the unknown value. 

01032014, 04:14 PM
Post: #3




RE: Help needed
Hi Micheal,
Thanks for your help! I think the formula should be s=c*(100+m)/100 My progress through the manual is at a steady pace. Regards 

01032014, 04:33 PM
Post: #4




RE: Help needed  
01032014, 05:05 PM
Post: #5




RE: Help needed
Thanks again,


01042014, 10:45 AM
(This post was last modified: 01042014 10:48 AM by Curlytop.)
Post: #6




RE: Help needed
I do cash register systems including stock control for a living. The correct formula linking selling price, margin and cost price (disregarding such trivialities as VAT or other taxes) is:
S = C * 100 / (100  M)
The important distinction is between margin and markup. Margin is profit as a fraction of the selling price, markup is profit as a fraction of the cost price. Most stock control systems are designed to work on margins but some of them (not ours) implement markup in error since that is simpler to handle. The times I've had to explain this distinction to our customers! The formula bears some resemblance to the formulas of relativity, so you can't get a margin of 100% (since that would make the selling price infinite) unless you start with a supplier's freebie (C = 0) in which case the entire selling price is profit irrespective of what you charge for it  analogous to a massless particle (e.g. a photon) always travelling at the speed of light irrespective of its energy. 

01042014, 12:16 PM
Post: #7




RE: Help needed
(01042014 10:45 AM)Curlytop Wrote: The formula bears some resemblance to the formulas of relativity, so you can't get a margin of 100% (since that would make the selling price infinite) unless you start with a supplier's freebie (C = 0) in which case the entire selling price is profit irrespective of what you charge for it  analogous to a massless particle (e.g. a photon) always travelling at the speed of light irrespective of its energy.1+ for this nice analogy! 

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