Before 5 years a man was 3 years times his boy but after 10 years the father's age will be 6 more than 2 times his boy

Answer 1

I think your question is

"Five years ago a man was 3 times his boy's age. Ten years from now the father's age will by 6 more than 2 times his boy's age."

Answer 2

5 years ago:
son's age ---- x
father's age --- 3x

now:
son ---- x+5
father ---- 3x+5

10 years from now:
son = x+5 + 10 = x + 15
father = 3x+5 + 10 = 3x + 15

3x+15 = 2(x+15) + 6
3x + 15 = 2x + 36

solve for x and answer whatever your question is