Question 1185954
Noel is 5 years older than Dennis;
same as Dennis is 5 years younger than Noel.


Hilda is 10 years older than Noel, so
Hilda is n+10;
Dennis is n-5;
Noel is n;


--
--


{{{n+(n-5)+(n+10)+3*8=65}}}-----------and question asks for n.