Answers

1. Answer:  4 years old

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   Work Shown:

   • x = son’s present age
   • x+25 = father’s present age being 25 years older than his son

   Let’s fast forward 19 years into the future to get these ages

   • x+19 = son’s future age
   • (x+25)+19 = x+44 = father’s future age

   These future ages combine to 71, so,

   (x+19) + (x+44) = 71

   2x+53 = 71

   2x = 71-53

   2x = 8

   x = 8/2

   x = 4

   The son is currently 4 years old, and his dad is currently x+25 = 4+25 = 29 years old.

   Fast forward 19 years to the future and the son will be 4+19 = 23 years old and the father will be 29+19 = 48 years old. Their combined future ages is 23+48 = 71 which fully confirms the answer.

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