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Paul is 20 years older than joy four years ago; the ratio of their ages was 7:3 find the present age of Paul

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  1. Let me fix your punctuation so the problem can be solved:

    Paul is 20 years older than Joy. Four years ago the ratio of their ages was 7:3. Find the present age of Paul.

    current ages:
    Joy ---- x
    Paul --- x+20

    Ages four years ago:
    Joy ---- x-4
    Paul ---- x+16

    (x+16)/(x-4) = 7/3

    continue ....

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  2. 4 years ago:
    Joy was X years old,
    Paul was x + 20 years old,
    (x+20)/x = 7/3,
    3x + 60 = 7x,
    X = 15.
    x + 20 = 15 + 20 = 35 years,
    Today: Paul's age = 35 + 4 = 39.

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