• # question_answer 19) If Rs. 20 is the difference of simple interest and compound interest, for two years at 4% p rannum, then the principal is ? A) Rs. 13, 500                   B) Rs. 12, 500C) Rs. 12, 000                   D) Rs. 13, 000

Principal amount            $=20\times {{\left( \frac{100}{4} \right)}^{2}}$ $=20\times 625$ $=Rs.\,\,12,500$