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3 years ago

13

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?

1 answer:

ivanzaharov [21]3 years ago

8 0

400 / 10 = 40.

40
X 9
= 360

In a group of 400 smokers, about 360 of them started before they reached their 21st birthday.

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