• question_answer 60) If Rs. 20 is the difference of simple interest and compound interest for two years at 4% per annum, then the principal is? A) Rs. 13, 000                   B) Rs. 12, 000C) Rs. 13, 500                   D) Rs. 12, 500

Principal amount$=20\times {{\left( \frac{100}{4} \right)}^{2}}$ $=20\times {{(25)}^{2}}$ $=20\times 625$ $=Rs.\,\,12,500$