At what rate (in percentage) per annum will ₹1,300 give ₹650 as simple interest in 10 years?

Correct option is D

Given:

Principal P = ₹1300

Simple interest SI = ₹650

Time T = 10 years

Formula Used: 

SI = $$\frac{P \times R \times T}{100}$$​​

Solution:

Substitute the given values into the formula: 

650 = $$\frac{1300 \times R \times 10}{100}$$​​

R = $$\frac{650 \times 100}{1300 \times 10}$$​​

​$$= \frac{65000}{13000} = 5\%$$ per annum