Answer :
Final answer:
It takes 100 machines 5 minutes to make 100 football helmets.
Explanation:
Mathematically, if it takes 5 machines 5 minutes to make 5 football helmets, it would take the same amount of time for any number of machines to make the same number of helmets since each helmet takes 1 minute to make. Therefore, it would take 100 machines 5 minutes to make 100 football helmets.
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