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| A hairy problem (Posted on 2019-05-08) |
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As we all know, human hair grows at a rate of 0.35 mm per day.
On December 31, 2018 Darren, Karen, and Sharon all shaved their heads. Furthermore, whenever Darren’s hair grew to
17mm he shaved it again. Karen did the same thing after her hair reached 20mm, and Sharon did likewise when hers was
21mm.
One day in 2019, Aaron goes to visit Darren, Karen, and Sharon. He finds that Darren is clean shaven, Karen’s hair is
19mm long, and Sharon’s hair is 14mm long.
What is the date of Aaron’s visit?
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