A person walks up a stalled escalator in 45 sec. He is carried in 60s, when standing
on the same escalator which is now moving. The time he would take to walk up
the moving escalator will be :-
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Answer: 25.71s
Explanation: for t=45;
v=d/t
v=d/45
For t=60;
v=d/60
Vrel. = Vman+ Vescalator (since in the same direction)
Therefore,
t= d÷ d/60+d/45
t= d÷ 105d/60*45
= d× 60×45÷105d
= 25.71s
hope I helped you :)
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