Question

After how much time will a sum of Rs 8000 amount to Rs 9261 at 10% per annum, compounded annually.

Answer 1

$\huge \boxed{\red\star\mathfrak\purple{\large{\underline{\underline{Answer!}}}}}$

Here,

A= Rs 9261

R= 10%

p.a= 5% semi annually

$\bold{9261 = 8000(1 + \frac{5}{100} ) {}^{n} }$

$\bold{ \frac{9621}{8000} = (\frac{21}{20} ) {}^{n} }$

$\bold{( \frac{21}{20}) {}^{n} = (\frac{21}{20} ) {}^{3} }$

n= 3 and half years = $\bold{1 \frac{1}{2} }$

Answer 2

Answer:

Refer to the attachment...