GJ Police PC · Quantitative Aptitude
Trains, boats, average speed and relative speed problems.
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Q1 · Time, Speed and Distance · EASY
A train 150 metres long passes a pole in 15 seconds. What is the speed of the train in km/h?
Q2 · Time, Speed and Distance · MEDIUM
A man can row downstream at 12 km/h and upstream at 8 km/h. What is the speed of the stream?
Q3 · Time, Speed and Distance · MEDIUM
Two trains of lengths 120 metres and 180 metres are running in opposite directions at speeds of 42 km/h and 48 km/h respectively. In how many seconds will they completely cross each other?
Q4 · Time, Speed and Distance · HARD
A car travels from point A to point B at a speed of 60 km/h and returns from B to A at a speed of 40 km/h. What is the average speed of the car for the entire journey?
Q5 · Time, Speed and Distance · EASY
A train covers a distance of 240 km in 3 hours. What is its average speed in km/h?