Question

A man is thrice as old as his son after 12 years he will be twice as old as his son at that time find their present ages ​

Answer 1

Answer:

$son \: age \: = 12 \\ father \: age \: = 12 \times 3 \\ = 36$

hope it helps.......

Answer 2

Answer:

$let \: the \: age \: of \: son = x$

$father's \: age = 3x$

$after \: 12 \: years$

$⟹3x + 12 = 2(x + 12)$

$⟹3x + 12 = 2x + 24$

$⟹3x - 2x = 24 - 12$

$⟹x = 12$

$son \: age = x$

$⟹12 \: years$

$father's \: age = 3x$

$⟹3 \times 12 = 36 \: years$