Question

at what rate rate percent compound interest does a sum of money becomes 1. 44 times of itself in 2 years

Answer 1

let the sum of money be x
so
p=x
a=1.44x
t=2years
a=p(1+r/100)²
1.44x=x(1+r/100)²
1.2*100=100+r
120-100=r
so
rate is 20%