A certain sum amounts to Rs. 12705 at 10% p. a. compounded interest after \(2\dfrac{1}{2}\) years, when the interest is compounded yearly. If the same sum amounts to Rs. 14500 at the same rate is x years at simple interest then the value of x is:
1
5
2
\(4\dfrac{1}{2}\)
3
\(5\dfrac{1}{2}\)
4
4