Postal or Sorting Assistants Model Paper 4 With Solutions

(c) Let the present age of the father and son be x and yyears respectively.
Then, we have x = 3y .... (i)
and (x — 15) = 9 (y — 15) or x — 15 = 9y — 135 orx — 9y = — 120 ... (ii)
From (i) and (ii), x = 60 years Age of the father after 15 years = 60+ 15 = 75 years