A) Rs. 15600
B) Rs. 12864
C) Rs. 12000
D) Rs. 14320
Correct Answer: D
Solution :
Balance \[=Rs.\left[ 12500\times {{\left( 1+\frac{20}{100} \right)}^{3}} \right]\] \[=Rs.\left[ 2000\times {{\left( 1+\frac{20}{100} \right)}^{2}}+2000\times \left( 1+\frac{20}{100} \right)+2000 \right]\] \[=Rs.\left[ \left( 12500\times \frac{6}{5}\times \frac{6}{5}\times \frac{6}{5} \right) \right]\] \[-\left[ \left( 2000\times \frac{6}{5}\times \frac{6}{5}+2000\times \frac{6}{5}+2000 \right) \right]\] \[=Rs.[21600-(2880+2400+2000)\] \[=Rs.14320\]
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