TNPSC Group I · Aptitude and Mental Ability
Trains, boats, average speed and relative speed.
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Q1 · Time and Distance · MEDIUM
A car travels from City A to City B at 60 km/hr and returns at 40 km/hr. What is the average speed for the entire journey?
Q2 · Time and Distance · MEDIUM
A train 150 meters long is running at a speed of 54 km/hr. How much time will it take to cross a platform 100 meters long?
Q3 · Time and Distance · EASY
A train travels 240 km at a uniform speed. If the speed had been 8 km/h more, it would have taken 1 hour less for the same journey. What is the original speed of the train?
Q4 · Time and Distance · HARD
Two trains of lengths 150 m and 200 m are running on parallel tracks in opposite directions at speeds of 54 km/h and 72 km/h respectively. In how many seconds will they cross each other?