At what rate of interest will a sum of Rs. 2700 amount to Rs. 4725 at simple interest for 15 years?

3.5% 5% 15% 10%

5%

P = 2700 Amount = 4725 SI (15 years) = 4725 - 2700 = 2025 S.I. (1 year) = 135 Rate % = \(\frac{SI (1 year)}{Principal}\) × 100            = \(\frac{135}{2700}\) × 100 = 5%