Question 664927
let their current ages be s and m
So {{{s = m - 25}}}
You are told that 10 years ago he was 1/6 her age then
{{{s-10 = (1/6)*(m-10)}}}
{{{s - 10 = (m-10)/6}}}
{{{6s - 60 = m - 10}}}
{{{6*(m-25) - 60 = m - 10}}}
{{{6m - 150 - 60 = m - 10}}}
{{{6m - 210 = m - 10}}}
{{{5m = 200}}}
{{{m = 40}}} she is 40 now. 
That makes suman 40 - 25= 15 now
ten years ago, he would have been 5 and his Mom would have been (40-10) = 30
Is 5 equal to 1/6 of 30?