briannagallo9610 briannagallo9610

14-01-2019
Mathematics

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A person on a moving sidewalk travel 21 feet on 7 seconds. The moving sidewalk has a length of 180 feet. How long with it take to move from one end of the sidewalk to the other

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helpguru helpguru

14-01-2019

21 feet requires = 7 seconds
1 feet requires = 7/21 seconds

180 feet requires
= (7/21)*180
= (1/3)*180
=60 seconds
= 1 minute

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