Mathematics, 14.07.2019 11:50 mackenziann

Achild is running on a moving sidewalk in an airport. when she runs against the sidewalk's motion, she travels 27ft in 9 seconds. when she runs with the sidewalk's motion, she travels 99ft in the same amount of time. what is the rate of the child on a still sidewalk and what is the rate of the moving sidewalk?

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Achild is running on a moving sidewalk in an airport. when she runs against the sidewalk's motion, s...