Question

if the simple interest on a sum of money is 1/3 of the sum in 3 years, find the rate of interest per annum​

Answer 1

Given:

• Time = 3 years
• SI = 1/3 of the sum

To find:

The rate of interest.

Solution:

The simple interest on any principal is given by:

• $SI = \frac{PRT}{100}$

So in the question SI = P/3

Put it in the formula,

• $\frac{P}{3} = \frac{PR.3}{100}$
• $\frac{1}{3} = \frac{R.3}{100}$
• $\frac{100}{9} = R$
• $R = 11\frac{1}{9}%$%

So the rate of the interest will be $R = 11\frac{1}{9}%$ %.

Answer 2

Answer:

Hope this will help you!!