Question 1172302
{{{y-5=(3/4)(x-5)}}}, and then "Five years later", means NOW, at the present time.  This description was, five years later than five years ago; so the place in time is now.


{{{system(y-5=3(x-5),y=(5/6)x)}}}-------and you would solve the system to find each present age.


If that was not what was meant then fix your description.