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Puzzle Details

Alex's child Drew, is exactly one fifth of Alex's age.

In 21 years time, Alex will be exactly twice Drew's age.

Blake's is exactly seven times the age of their child, Glen.

In 8 years time, Blake will be three times the age of Glen.

How old are Drew and Glen now?

Puzzle Copyright © Kevin Stone

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Hint: A little bit of algebra might help.

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