Question

If the boy is 24 years younger than his father and after years sum of their age Will be 40. How old is the father?

Answer 1

b+x + b+24+x = 40
2b+2x = 16
b+x = 8
So, there are several possibilities:
boy=1, father=25. In 7 years they will be 8+32=40
...
boy=7, father=31. In 1 year they will be 8+32=40