A sum of money is paid back in two annual instalments of

A sum of money is paid back in two annual instalments of Rs. 17, 640 each, allowing 5% compound interest compounded annually. The sum borrowed was

According to question ,
Sum borrowed = Present worth of Rs. 17640 due 1 year hence + Present worth of Rs. 17640 due 2 years hence

= Rs.		17640 ×	20	+ 17640 ×	20	×	20
			21		21		21

sum borrowed = Rs. (16800 + 16000) = Rs. 32800