UP Police SI · Numerical & Mental Ability
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Time, Speed & Distance
Trains, boats and streams, relative speed.
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Take a full mock →Q1 · Time, Speed & Distance · EASY
A train 150 metres long passes a telegraph post in 15 seconds. What is the speed of the train in km/hr?
Q2 · Time, Speed & Distance · MEDIUM
A boat travels 24 km upstream in 4 hours and returns downstream in 3 hours. What is the speed of the stream in km/hr?
Q3 · Time, Speed & Distance · MEDIUM
Two trains of lengths 120 metres and 180 metres are running in opposite directions at speeds of 54 km/hr and 72 km/hr respectively. In how many seconds will they completely cross each other?
Q4 · Time, Speed & Distance · HARD
A man can row 36 km downstream in 3 hours and the same distance upstream in 6 hours. If he rows in still water for 5 hours, what distance will he cover?
Q5 · Time, Speed & Distance · MEDIUM
A train running at 72 km/hr crosses a platform of length 250 meters in 26 seconds. What is the length of the train?