A sum of money is borrowed and paid back in two annual installments of Rs. 882 each allowing 5% C.I. The sum borrowed was?  Choose the correct choice from the following choices:  A) Rs.1648  B) Rs.1640  C) Rs.1289  D) Rs.1282  E) Rs.1633
Principal = (P.W. of Rs. 882 due 1 year hence) + (P.W. of Rs. 882 due 2 years hence)   = [882/(1 + 5/100) + 882/(1 + 5/100)2]   = (882 * 20)/21 + (882 * 400)/441   = Rs.1640.   Answer:Rs.1640
<result>B</result>
A sum of money is borrowed and paid back in two annual installments of Rs. 882 each allowing 5% C.I. The sum borrowed was?