Question

find the compound interest on rupees 160000 at 15% per annum for 313 years​

Answer 1

$\sf{\huge{\boxed{\underline{\pink{Solution \: :-}}}}}$

To Find :-

compound interest on rupees 160000 at 15% per annum for 313 years

compound interest = $\sf \: p(1 + \frac{r}{100} {)}^{t} - p$

where p = principle

r = rate

t = time period

by putting the values

$\sf \: 160000(1 + \frac{15}{100} {)}^{3} - 160000 \\ \\ \sf 160000(1 + \frac{3}{20} {)}^{3} - 160000 \\ \\ \sf 160000 \times \frac{23}{20} \times \frac{23}{20} \times \frac{23}{20} - 160000 \\ \\ \sf160000(\frac{23}{20} \times \frac{23}{20} \times \frac{23}{20} - 1) \\ \\\sf160000(1.52087 - 1) \\ \\ 160000 \times 0.52087 \\ \\\sf = 83,339.2 \: \sf \: rs$

Hope that this will help you