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Father-Son Age Puzzle

Algebra Level 1

A father is 9 times as old as his son. In three years, the father will be 6 times as old as his son.

How old is the son?

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Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, interactive explorations.

Used and loved by over 5 million people

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including olympiad champions, researchers, and professionals.

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by Syed Zohaib Gilani

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