An amount of Rs 6000 lent at 5% per annum compounded interest for 2 years will become = ?

Explanation:-

$$\eqalign{ & {\text{Amount = 6000}}{\left( {1 + \frac{5}{{100}}} \right)^2} \cr & \Rightarrow {\text{Amount = 6000}} \times \frac{{21}}{{20}} \times \frac{{21}}{{20}} \cr & \Rightarrow {\text{Amount = Rs. 6615}} \cr}$$