The difference between the simple interest received from two different sources on ₹1100 for 2 years is ₹22. The difference between their rates of interest is :

1%

S.I. = \(\frac{P × R × T }{100}\)

⇒ S.I.₂ - S.I.₁ = 22, (principal is same)

⇒ \(\frac{P × R_2 × 2 }{100} - \frac{P × R_1 × 2 }{100}\)= 22

⇒ \(\frac{1100}{100}\) × 2 (R₂ - R₁) = 22

⇒ (R₂ - R₁) = \(\frac{22 × 100 }{1100 × 2}\)

⇒ (R₂ - R₁) = 1%