The age of a father 3 years ago is same as the age of a mother 3 years after, and the ratio of the ages of the father 2 years and son 4 years after is 10 ∶ 3. What is the ratio of age of the mother after 3 years and the son after 2 years if the present age of the mother is 4 times the age of the son?
1
10 ∶ 3
2
7 ∶ 2
3
6 ∶ 1
4
9 ∶ 4
5
Cannot be determined