What is the principal when I = Rs 812, T = 4 year and R = 5% per year?

Given that:

Simple Interest (SI) = ₹ 812

Time = 4 years

Rate = 5%

Let principal amount be = a

Now,

$ \begin{array}{l}
SI\ =\ \frac{P\ \times \ R\ \times \ T}{100}\\
\\
\\
812\ =\ \frac{a\ \times \ 5\ \times \ 4}{100}\\
\\
\\
812\ \times \ 100\ =\ a\ \times \ 5\ \times \ 4\\
\\
\\
81200\ =\ a\ \times \ 20\\
\\
\\
a\ =\ \frac{81200}{20}\\
\\
\\
a\ =\ 4060
\end{array}$

So, principal amount be = a = ₹ 4060

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Updated on: 10-Oct-2022

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