3 years ago a father was 3 times as old as his son in 5 years time he will be twice as old as his son in, what will be the sum of their years in four years time

46 because if the age of the son was 8 then the father was 24 and if we add 8 (because that's how many years passed) we get 16 and 32 which fit the criteria so if we take off 1 year on each (because only 7 years pass instead of 8) we can add them together and get 46