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I am trying to describe our formulas to our users, and have forgotten the basic math term for these 2 types.

First one is: $$y=x+10\% $$ $$z=y+10\%$$ if $x$ was $10$, then $z$ would be $12.1$.

Other is: $$p=10\%+10\%+10\%\;\;\;\; (30\%)$$ $$z=x+p$$ if $x$ was $10$, then $z$ would be $13$.

I'm drawing a complete blank, and appreciate any help in wording this and giving a 'proper' example to my users.

Thank you Stack community in advance,

  • 0
    I don't quite understand your notation. I assume you actually mean that y is equal to x plus 10% of x and so forth?2012-01-19
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    I honestly do not understand what you are asking...2012-01-19
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    I'm asking what the math term is, I know it isn't worded well. Thank you for rewording it @QiaochuYuan2012-01-19
  • 0
    A system of equations?2012-01-19
  • 0
    Is it related to programming? Because the percentage notation is then used as [modulo operation](http://en.wikipedia.org/wiki/Modulo_operation)2012-01-19
  • 0
    It is seems like you are asking to [interest computation](http://en.wikipedia.org/wiki/Compound_interest)2012-01-19

2 Answers 2