The ratio between the age of Raj and his wife Sam before 10 years is 5 : 3. The ratio between the age of Sam and his cousin Ritu after 5 years will be 6 : 5. Raj is 15 years elders to Ritu. Find the ratio between the age of Raj and Sam after 10 years.
1
7 : 3
2
9 : 7
3
9 : 5
4
4 : 5
5
7 : 5