question: Liam is 16 years old now. Two years ago, Liam’s age was twice the age of Vince. How old is Vince now?
answer: Liam's age two years ago was 16 - 2 = <<16-2=14>>14 years old.
  Vince's age two years ago was 14/2 = <<14/2=7>>7 years old because Liam's age is twice his.
  So Vince age now is 7 + 2 = <<7+2=9>>9 years old.
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