Question

father age is four times his son's present Age 4 years ago father was six times as old as his son find the present age of son​

Answer 1

S O L U T I O N :

Let the present age of son's be r years & the present age of father's be 4r years .

$\underbrace{\bf{4\:years\:ago\::}}$

The age of the son's was = (r-4) years .

The age of the father's was = (4r-4) years .

A/q

$\mapsto\tt{(4r-4) = 6(r-4)}$

$\mapsto\tt{4r-4= 6r-24}$

$\mapsto\tt{4r-6r= -24+4}$

$\mapsto\tt{-2r= -20}$

$\mapsto\tt{r= \cancel{-20/-2}}$

$\mapsto\bf{r=10\:years}$

Thus;

The present age of son's r = 10 years .