A

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Q. A father is twice his son’s present age. How many years ago, was he three times his son’s age, if his son’s age is now 20 years?

  • (A) 8 years
  • (B) 10 years
  • (C) 12 years
  • (D) 15 years
  • Correct Answer - Option(B)
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  • Filed under category Math
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Explanation by: Admin

Given that :- Present age of son = 20 years
According to question ,
father’s present age = 2 × Present age of son
His father’s present age = 2 x 20 = 40 years
10 years ago , The age of son = 20 – 10 =10 years
Father’s age = 40 – 10 = 30 years = 10 × 3
Hence , required answer will be 10 years ago .

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