SOLUTION: A child is running on a moving sidewalk in an airport. When he runs against the sidewalk's motion, he travels 39 feet in 13 seconds. When he runs with the sidewalk's motion, he tra

Question 453517: A child is running on a moving sidewalk in an airport. When he runs against the sidewalk's motion, he travels 39 feet in 13 seconds. When he runs with the sidewalk's motion, he travels 60 feet in 12 seconds. What is the rate of the child on a still sidewalk and what is the rate of the moving sidewalk?
Answer by jorel1380(3719) (Show Source): You can put this solution on YOUR website!
39/13= 3 ft/sec against the sidewalk
60/12= 5 ft/sec with the sidewalk
3+5/2= 4 ft/sec without sidewalk
Sidewalk moves at 5-4= 1 ft/sec..
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