Question

Let us write the rate of compound interest per annum, so that he amount on rs.400 for 2years becomes rs 441.​

Answer 1

Step-by-step explanation:

Refer to the Attachment✌

Answer 2

Answer:

let the rate of compound interest is =r

time=2 years

p=400 rs

now according to the problem...

$441 = 400(1 + \frac{r}{100} ) {}^{2} \\ = > \sqrt{ \frac{441}{400} } - 1 = \frac{r}{100} \\ = > r = 0.05 \times 100 = 5$

therefore the interest rate was =5 percent