If Devin is 12 years old, then Eden is 2 * 12 years = 24 years old.

Since Eden's mom two times older than Eden, her age is 24 years * 2 = <<24*2=48>>48 years.

In total, they have 48 years + 24 years + 12 years = <<48+24+12=84>>84 years

The average age for the three is 84 years / 3 people = <<84/3=28>>28 years/person

# Answer

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Question:
Eden's mom is twice as old as Eden, who is twice as old as Devin. If Devin is 12 years old, what's the average age of the three?
Answer:
Let's think step by step.

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28
Eden's mom is twice as old as Eden, who is twice as old as Devin. If Devin is 12 years old, what's the average age of the three?
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