Trains, boats and streams, relative and average speed.
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Q1 · Time 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 and Distance · MEDIUM
A boat travels 24 km upstream in 4 hours and 36 km downstream in 3 hours. What is the speed of the boat in still water?
Q3 · Time and Distance · MEDIUM
Two trains 120 metres and 180 metres long are running in opposite directions at speeds of 54 km/h and 72 km/h respectively. In how many seconds will they completely cross each other?
Q4 · Time and Distance · EASY
A train covers a distance of 450 km at a uniform speed. If the speed had been 5 km/h more, it would have taken 1 hour less for the journey. What is the original speed of the train?
Q5 · Time and Distance · MEDIUM
Two trains of lengths 120 m and 180 m are running on parallel tracks in the same direction at speeds 72 km/h and 54 km/h respectively. How long will the faster train take to cross the slower train?