Principal \((p) = ₹25000\) First year interest rate \((r_1) = 4\%\) Second year interest rate \((r_2) = 5\%\) Third year interest rate \((r_3) = 6\%\) \(\therefore\) Compound amount after 3 years: \[ = p\left(1 + \frac{r_1}{100}\right)\left(1 + \frac{r_2}{100}\right)\left(1 + \frac{r_3}{100}\right) \] \[ = 25000 \times \frac{104}{100} \times \frac{105}{100} \times \frac{106}{100} = ₹28938 \] Therefore, at the end of 3 years, Aman will repay ₹28938 including interest.