if-I-a-1-r-100-n-make-n-the-subject-of-formular-

Question Number 8663 by uchechukwu okorie favour last updated on 20/Oct/16

i f I = a {(1 - \frac{r}{100})}^{n}

m a k e n t h e s u b j e c t o f f o r m u l a r

Answered by sandy_suhendra last updated on 20/Oct/16

{(1 - \frac{r}{100})}^{n} = \frac{I}{a}

\log {(1 - \frac{r}{100})}^{n} = \log \frac{I}{a}

n \log (1 - \frac{r}{100}) = \log \frac{I}{a}

n = \frac{\log \frac{I}{a}}{\log (1 - \frac{r}{100})}

n = \log_{(1 - \frac{r}{100})} [\frac{I}{a}]