Time and Distance

Speed, distance, trains and boats.

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Q1 · Time and Distance · EASY
A bus travels 180 km in 4 hours. What is its speed in km/hr?
Q2 · Time and Distance · MEDIUM
A train 150 metres long passes a telegraph pole in 10 seconds. What is the speed of the train in km/hr?
Q3 · Time and Distance · MEDIUM
A man rows downstream 30 km in 3 hours and upstream 18 km in 3 hours. What is the speed of the stream in km/hr?
Q4 · Time and Distance · HARD
Two trains of length 120 metres and 180 metres are running in opposite directions at speeds of 45 km/hr and 54 km/hr respectively. In how many seconds will they completely cross each other?
Q5 · Time and Distance · MEDIUM
A car covers a certain distance at 60 km/hr and returns at 40 km/hr. What is the average speed for the entire journey in km/hr?