Ram, Shyam and Raju entered into a partnership by investing in the ratio of 5 : 3 : 4. At the end of the year, the total profit is in the ratio of 15 : 12 : 32. Then find the ratio of the period of time they invested in the business.
1
9 : 10 : 13
2
9 : 10 : 15
3
5 : 7 : 9
4
3 : 4 : 8
5
None of these