Question 891449
Just convert the description into expressions or equations.


r = ramon's age
q = his father's age


{{{q=1+4r}}}
Solve for q not possible.  Two unknown variables but only one equation.


Three years ago, their ages were r-3 and q-3.
{{{q-3=1+4r-3}}}
{{{highlight((q-3)=4r-2)}}}, father's age three years ago in terms of r.