Question

At what rate percent per annum simple interest on a certain sum of money for 20 years be equal to 4/9th of its amount for that period​

Answer 1

Answer:

2.2%

Step-by-step explanation:

S.I. = P*R*T/100

Let the principle money (P) be m then simple interest (S.I.) will be 4/9*m

Putting the values in equation

4/9*m = m*R*20/100

m*R*20/100 = 4/9*m

R = 4/9*m / m*20/100

R = 20/9

R =  2.2%