Question

hi
I will mark as brain list please
tell me answer of this question in easy way but Step-by-step explanation ​

Answer 1

we know that c.i is

$p {(1 + \frac{r}{100} )}^{n} \\ 4000 {(1 + \frac{r}{100} )}^{2} = 5290 \\ {(1 + \frac{r}{100} )}^{2} = \frac{5290}{4000} \\ </p><p> \frac{100 + r}{100} = \sqrt{ \frac{529}{400} } \\ \frac{100 + r}{100} = \frac{23}{20} \\ 2000 + 20r = 2300 \\ 20r = 2300 - 2000 \\ 20r = 300 \\ r = 15$

rate is 15%