A sum of ₹ 15,400 was lent in two parts, partly at 9% and the rest at 12% simple interest. The total interest received after three years is ₹ 4,914. The ratio of the money lent at 9% to that at 12% is:
1
4 : 5
2
5 : 7
3
6 : 7
4
5 : 6
5
Question Not Attempted