SOLUTION: It takes 60 seconds to walk up a broken escalator and 40 seconds to ride up the same escalator when it is moving.� How long will it take to walk up the same escalator when it is mo

Question 588375: It takes 60 seconds to walk up a broken escalator and 40 seconds to ride up the same escalator when it is moving.� How long will it take to walk up the same escalator when it is moving?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
It takes 60 seconds to walk up a broken escalator and 40 seconds to ride up the same escalator when it is moving.
How long will it take to walk up the same escalator when it is moving?
:
Assume the length of the escalator is 60 ft
then
Walking: 1 ft/sec
moving: 60/40 = 1.5 ft/sec
walking & moving 2.5 ft/sec
:
Find the time at 2.5 ft/sec
t = 60/2.5 = 24 seconds walking & moving
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