A boys' age is x years and his father's age is five years as old as his son . what will be the sum of their ages in ten years time. These age is now 17.how old will he be in x years time and what is the sum of his age in x years time and 15 years ago

Answer 1

It would help if you proofread your questions before you posted them.

How can father's age be "five years as old as his son"? Is "he" and "him" father or son?

Answer 2

suppose you meant "five times as old"
In that case, you have
in ten years, the sum will be x+10 + 5x+10

as for what "these age is now 17" means, I have no clue.