When the son will be as old as his father today, the sum of their ages then will be 126. When
the father was as old as his so

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1. Step-by-step explanation:

   Let son’s age be = x

   Let father’s age be = y

   According to Case I

   If x = y

   Then x + y = 126

   y + y = 126

   2y = 126

   y = 126 ÷ 2

   y = 68

   So father’s age will be 68 years

   According to Case II

   If y = x

   Then x+y = 38

   x+x = 38

   2x = 38

   x = 19

   So son’s age will be 19 years.

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