A father was 3 times as old as his son in 1980 A.D.and 5/3 times as old in 2008 A.D.In which year was the son born?

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A father was 3 times as old as his son in 1980 A.D.and 5/3 times as old in 2008 A.D.In which year was the son born?

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Eloise 1 month 2021-09-16T16:33:13+00:00 1 Answer 0 views 0

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    2021-09-16T16:34:33+00:00

    Let s be the son, and 3s be the father, in 1980. Then:

    2008–1980=28 years

    So:

    5/3(s+28)=3s+28

    5s/3+140/3=3s+28

    5s+140=9s+84

    4s=56

    s=14

    If the son was 14 in the year 1980, then he was born in 1966 ……………

    …….i hope it’s helpful for u…..

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