Here, P = RS. 2668, T = 5yr, A = RS. 4669

We know that,

Amount (A) = Principal (P) + (Simple Interest)SI

4669 = 2668 + SI

=> SI = 4669 - 2668 = RS.2001

Again, SI = \( \Large \frac{P\times R\times T}{100} \)

2001 = \( \Large \frac{2668\times R\times 5}{100} \)

=> R=\( \Large \frac{2001\times 100}{2668\times5}=\frac{2001\times 5}{667} \)=15%