TNPSC Group IV · Aptitude and Mental Ability Test
Trains, boats, average and relative speed.
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Q1 · Time and Distance · EASY
A train 120 metres long passes a pole in 6 seconds. What is the speed of the train in km/hr?
Q2 · Time and Distance · EASY
A man can row downstream at 15 km/hr and upstream at 9 km/hr. What is the speed of the man in still water?
Q3 · Time and Distance · MEDIUM
Two trains are running in opposite directions with speeds of 45 km/hr and 55 km/hr respectively. If the length of each train is 100 metres, in how many seconds will they cross each other?
Q4 · Time and Distance · MEDIUM
A person covers a certain distance by car at 60 km/hr and returns to the starting point at 40 km/hr. What is his average speed for the entire journey?
Q5 · Time and Distance · HARD
A train 200 metres long is running at 72 km/hr. It crosses a bridge in 25 seconds. What is the length of the bridge in metres?