Hello brainly mathematics masters team: please help me with this question by explaining to me step by step

The age of father 3 years ago is same as the age of a mother, and the ratio of the ages of the father 2 years and the 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?
Correct answer is 7:2

I want my question to be solved as Mother=x Father=y Son=z