Mathematics, 25.08.2019 07:30 keilahkimbrough8

Approximately 9 out of 10 smokers began smoking before the age of 21. in a group of 400 smokers, about how many of them started before they reached their 21st birthday?

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Approximately 9 out of 10 smokers began smoking before the age of 21. in a group of 400 smokers, abo...

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