Question

hey guys please solve this.
it's urgent ​

Answer 1

Principle amount, P = 1000 Rs

Final amount, A = 2000 Rs

Interest rate, r = ?

Number of times interest applied per time period, n = 2

Number of time periods elapsed, t = 5

Compund interest formula

$A = P(1+\frac{r}{n})^{nt}$

$2000 = 1000(1+\frac{r}{2})^{2*5}$

$2 = (1+\frac{r}{2})^{10}$

$1 + \frac{r}{2} = \sqrt[10]{2}$

$1 + \frac{r}{2} = 1.072$

$\frac{r}{2}=0.072$

$r = 0.144$

So, r in % = 0.144×100 = 14.4%

SO THE ANSWER IS 14.4%