The present ages of A and B are in the ratio 7 : 9. After 'x' years the ratio of their ages becomes 4 : 5 and 'x + 6' years ago the ratio of their ages was 18 : 25. Find the sum of their ages after 'x' years.
1
126 years
2
120 years
3
136 years
4
130 years
5
132 years