CAT 2022 Time, Speed and Distance Question (Medium)

Question

Moody takes 30 seconds to finish riding an escalator if he walks on it at his normal speed in the same direction. He takes 20 seconds to finish riding the escalator if he walks at twice his normal speed in the same direction. If Moody decides to stand still on the escalator, then the time, in second

Accepted Answer

Step 1 Let the speed of the escalator be steps sec and Moody s normal walking speed be steps sec. When Moody walks at normal speed Total steps When Moody walks at twice his normal speed Total steps Step 2 Since both represent the same escalator length Expanding Simplify Step 3 If Moody stands still

CAT 2022

Quantitative

Time, Speed and Distance

Medium

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