A man invested the sum of Rs. 5000 in a scheme for 2 years at certain rate of interest on compound interest. If he invested the same sum of money in another scheme at the same rate of interest for the same period of time on simple interest, then the difference in the interest from both the schemes is Rs. 128. Find the rate of interest.
1
24%
2
16%
3
12%
4
18%
5
32%