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Greetings!
You can create an equation to solve for x:
Cross Multiply.
Divide both sides by 10.
The Answer Is:
Out the 400 smokers, approximately 360 of them started smoking before age 21.
Hope this helps.
-Benjamin
You can create an equation to solve for x:
Cross Multiply.
Divide both sides by 10.
The Answer Is:
Out the 400 smokers, approximately 360 of them started smoking before age 21.
Hope this helps.
-Benjamin