SOLUTION: A child is running on a moving sidewalk in an airport. When he runs against the sidewalk's motion, he travels 91ft in 13 seconds. When he runs with the sidewalk's motion, he trav

Question 1007829: A child is running on a moving sidewalk in an airport. When he runs against the sidewalk's motion, he travels
91ft in 13 seconds. When he runs with the sidewalk's motion, he travels
195ft 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?
Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
Call the child's normal rate, r.
Call the rate of the walkway, w.
(r + w)(13) = 195
(r - w)(13) = 91
and
13r + 13w = 195
13r - 13w = 91
Now add these and get
26r = 286
r = 11 ft/s
By plugging in we find
w = 4 ft/s
RELATED QUESTIONS
A child is running on a moving sidewalk in an airport. When she runs against the... (answered by Alan3354)

A child is running on a moving sidewalk in an airport. When she runs against the... (answered by Alan3354,ankor@dixie-net.com)

A child is running on a moving sidewalk in an airport. When he runs against the... (answered by addingup)

A child is running on a moving sidewalk in an airport. When he runs against the... (answered by jorel1380)

A child is running on a moving sidewalk in an airport. When he runs against the... (answered by TimothyLamb)

A child is running on a moving sidewalk in an airport. When he runs against the... (answered by Boreal)

A child is running on a moving sidewalk in an airport. When he runs against the... (answered by stanbon)

A child is running on a moving sidewalk in an airport. When he runs against the... (answered by ikleyn)