# If the father's age is 46 years now, what was the son's age twenty one years back?

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A father said to his son, " I was as old as you are at the present at the time of your birth ".
If the father's age is 46 years now, what was the son's age twenty one years back?

posted Oct 12, 2018
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## 2 Answers

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Son's present age = Father's age at son's birth --- 1
Father's present age = Father's age at son's birth + Son's present age
[From 1]
2×Son's present age = 46
Son's present Age = 23
Son's age 21 years ago = 23 - 21 = 2 years

answer Oct 12, 2018
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2 years old

46-x=x => x=23
21 years back he was 23-21=2 years old

answer Oct 12, 2018

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