Discussion

Explanation:

Balance =$$\begin{gathered} \left[\left\{12500\times {\left(1+\frac{20}{100}\right)}^3\right\}-\left\{2000\times {\left(1+\frac{20}{100}\right)}^2+2000\times \left(1+\frac{20}{100}\right)+2000\right\}\right] \\ \Rightarrow \left[\left(12500\times \frac{5}{6}\times \frac{6}{5}\times \frac{6}{5}\right)-\left(2000\times \frac{6}{5}\times \frac{6}{5}+2000\times \frac{6}{5}+2000\right)\right] \\ =\left[21600-\left(2880+2400+2000\right)\right]=14320 \end{gathered}$$

Hence, option (d)

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