The average age of a group of 15 employees in a company is 30 years. When Shreya left the group, the average age of the group decreased by 2 years. Later, the average age decreased by another 1 year when Rahul left the group. What is the average age of Shreya and Rahul?
1
45.5
2
47.5
3
49.5
4
51.5
5
None of these