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 : Sriya with her family travelled from Bolpur to Suri by car at a speed of 40 km/h and returned to Bolpur at a speed of 50 km/h. The average speed for the whole journey is:

Option 1: $44\frac{4}{9}$ km/h

Option 2: $45$ km/h

Option 3: $45\frac{1}{2}$ km/h

Option 4: $44.78$ km/h

Question : A truck covers three equal distances of 100 km at the speeds of 200 km/hr, 300 km/hr, and 600 km/hr. Find the average speed of the truck for the whole journey.

Option 1: 250 km/h

Option 2: 300 km/h

Option 3: 366.66 km/h

Option 4: 327 km/h

Question : Anil completed a certain journey by car. If he covered 35% of the distance at 70 km/h, 40% of the distance at 80 km/h and the remaining distance at 50 km/h, his average speed (in km/h) for the entire journey is:

Option 1: $66 \frac{1}{6} $km/h

Option 2: $66 \frac{2}{3} $km/h

Option 3: $66 \frac{1}{3} $km/h

Option 4: $66 \frac{4}{3} $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