The area of two rectangular fields are in the ratio of 2 ∶ 5. If the breadth of the latter is 2 times the breadth of the former and the length of former is 4 times its breadth and length of the latter rectangular field is 5m. Find the ratio of the breadth of both the rectangular field.
1
2 ∶ 5
2
5 ∶ 6
3
7 ∶ 8
4
1 ∶ 2
5
3 ∶ 5