A sum amounts to Rs 7727.104 at 12% per annum compounded annually after 3 years. What is the value of principal?
5500
Compound-interest amount formula:
\[A = P\left(1+\tfrac{r}{100}\right)^n = P(1.12)^3\]
\((1.12)^3 = 1.404928\), so
\[P = \frac{7727.104}{1.404928} = 5500\]
Therefore principal = Rs 5500.
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