Question

if the interest on a certain sum of money is 4/9 th of the repayable amount in 20 years, then find the rate of interest ​

Answer 1

Answer:

Let the sum be Rs P.

Let the sum be Rs P. Then SI = (4/9) P.

Let the sum be Rs P. Then SI = (4/9) P. Also given R=T.

Let the sum be Rs P. Then SI = (4/9) P. Also given R=T. Since SI = PTR/100

Let the sum be Rs P. Then SI = (4/9) P. Also given R=T. Since SI = PTR/100 we find that 4/9P = P x R x R /100=> R^2 = 100 x 4/9 => R = 20/3 = 6 2/3

Hence the rate = 6 2/3 % and time = 6 2/3 years or 6 years 8 months.

Step-by-step explanation:

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