In a certain vessel water to milk ratio is 2 : 1. In another vessel milk to water ratio in 1:7. They are mixed in a ratio of 9:16 to form 100 litres of new solution. Now 20 litres of the final solution is taken out and 10 litres of milk is added to the remaining solution. Again 9 litres of the solution is taken out and 5 litres of milk is added to the remaining solution. What is the final percentage of milk in the resultant mixture?

1) 23%
2) 33%
3) 36%
4) 46%