Question

What is the rate of simple interest for the first 4 years if the sum of Rs.360 becomes Rs. 540 in 9 years and the rate of interest for the last 5 years is 16%?

• A. 4%
• B. 5%
• C. 3%
• D. 6%

Answer 1

The correct option is B 5%

P = Rs. 360, A = Rs. 540, SI = Rs. 180.

$SI=\frac{PRT}{100}$

$180=\frac{360\times R\times 4}{100}+\frac{360\times 6\times 5}{100}$

$72=\frac{360\times R\times 4}{100},R=5\%$