Question

interest is 126 at 3 % p.a. at the end of 5 years find the principle

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Answer 1

AnSwEr♡~

Let the principal be x

Time= 5 years

Rate of interest =3%

SI= 126

$\sf \: Simple \: interest = \frac{p \times r \times t}{100} \\ \\ \rightarrow\sf126 = \frac{x \times 3 \times 5}{100} \\ \\ \sf \rightarrow126 \times 100 = x \times 15 \\ \\ \sf \rightarrow12600 = 15x \\ \\ \implies \sf \frac{12600}{15} = x = 840$

So the principal is rs.840

`Hope it helps you....