A certain sum amounts to Rs. 12,705 in \(2\dfrac{1}{2}\) years at 10% p.a. interest compounded annually. What is the compound interest on the same sum for one year at the same rate, if the interest is compounded half-yearly?
1
Rs. 1,025
2
Rs. 1,100
3
Rs. 1,050
4
Rs. 1,000