The present age of the father is 54 years and the present age of the son is 1/6th of the present age of the father. If x years ago, the age of the father to son is in the ratio 10: 1. The present age of the mother is (8x + 4) . Find the ratio between the present age of mother and father.
1
4 : 3
2
2 : 3
3
3 : 2
4
2 : 1
5
4 : 5