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Thread: Compound interest

  1. May 15th 2008, 01:22 AM #1
    Gautam_needhelp
    Gautam_needhelp is offline
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    Smile Compound interest





    The formula A=p(1 + R/100) raised to n
    i ned to get only the R t left side an rest to the right..
    Plz help
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  2. May 15th 2008, 02:51 AM #2
    Gusbob
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    You start off with:
    P\left(1+\frac{R}{100}\right)^n = A
    \left(1+\frac{R}{100}\right)^n = \frac{A}{P}
    Root both sides by n
    1+\frac{R}{100} = \sqrt[n]{\frac{A}{P}}
    \frac{R}{100} = \sqrt[n]{\frac{A}{P}} -1
    R = 100\sqrt[n]{\frac{A}{P}} -100
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