The simple interest on ₹2500 is ₹100 more than simple interest on ₹2250 in 2 years then find the interest rate per annum.

5% 10% 20% 15%

20%

\(\frac{P\;×\;R\;×\;T}{100}\) = S.I. ATQ,  ⇒ \(\frac{2500 × RT}{100}\) -  \(\frac{2250 × RT}{100}\) = 100 ⇒ \(\frac{RT}{100}\) × 250 = 100 ⇒ RT = 40 ⇒ R × 2 = 40              (Here T = 2) ⇒ R = 20%