Question : A train is moving at a speed of 80 km/h and covers a certain distance in 4.5 hours. The speed of the train to cover the same distance in 4 hours should be:

Option 1: 100 km/h

Option 2: 70 km/h

Option 3: 85 km/h

Option 4: 90 km/h

Question : A train 150 m long passes a km stone in 30 seconds and another train, of the same length and travelling in the opposite direction, in 10 seconds. The speed of the second train is:

Option 1: 90 km/h

Option 2: 125 km/h

Option 3: 25 km/h

Option 4: 75 km/h

Question : A train runs from Howrah to Bandel at an average speed of 20 km/h and returns at an average speed of 30 km/h. The average speed (in km/h) of the train in the whole journey is:

Option 1: 20

Option 2: 22.5

Option 3: 24

Option 4: 25

Question : A train is 250 meters long. If the train takes 50 seconds to cross a tree by the railway line, the speed of the train in km/h is:

Option 1: 10

Option 2: 9

Option 3: 5

Option 4: 18

Question : A car travels at a speed of 60 km/h and covers a particular distance in one hour. How long will it take for another car to cover the same distance at 40 km/h?

Option 1: 2.5 hours

Option 2: 2 hours

Option 3: 1.5 hours

Option 4: 1 hour