Question

at what rate percent compound interest per annum will a sum of rupees X amount to 4 x into years​

Answer 1

4x^2 it is your answer

Answer 2

Answer:

The rate of interest is 1%

Step-by-step explanation:

Principal = x

Amount = 4x

Time = 2 years

Formula : $Amount = P(1+r)^t$

Substitute the values

$4x = x(1+r)^2$

$4= (1+r)^2$

$2= (1+r)$

$r=1\%$

Hence the rate of interest is 1%