X walks down an UP-escalator and counts 150 steps.Y walks up the same same escalator and count 75 steps.X takes three times as many steps in a given time as Y.How many steps are visible on the escalator?
When time is constant if X = 150 steps ,Y = 150/3 = 50 steps and Escalator assume takes E steps. For Y to take 75 steps Escalator will move 1.5E 150 -E = 75 +1.5 E => E = 30 Ans 150 -30 = 120
am i correct???
let T be time Y takes to make 25 steps. so Y takes 3T to make 75, and X takes 2T to make 150. Suppose the escalator has N steps and moves A steps in time T so X covers N + 2A = 150 N - 3A = 75. Hence N = 120, A= 15.
i get the answer as 120 steps. tell me if anybody else gets the same answer.
Your mind works so beautifully...Great yaar
that seems to be what everyone is getting
lol thanx:D
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