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Question is in picture

Question is in picture
asked 124k views
4 votes
Question is in picture

Question is in picture-example-1
asked
User Pretty Good Pancake
by
7.8k points

1 Answer

4 votes

Answer:

30

Step-by-step explanation:

I believe it's 30 because half of 24 is 12 and that is its half life. And as you know it took 30 minutes to get there.

answered
User Cotten
by
8.0k points
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