question_answer

      The sum of the ages of father and his son is 45 years. Five year ago product of their ages (in years) was 124. Determine their present ages. OR Solve for x and  

Answer:

  Let age of father = x years and age of son = y years.  x + y = 45 Also (x - 5) (y - 5) = 124  xy - 5 (x + y) + 25= 124   xy ? 5 (45) + 25 = 124  xy = 124 + 225 ? 25 = 324 Now        x + y = 45, xy = 324             x = 36, y = 9 Father's age = 36 years                              ( father's age is greater than son's age) Son's age = 9 years. OR