Question : Rajinder drives his car at an average speed of 40 km/hr to cover half of his total distance and thereafter he increases his speed to 60 km/hr. He covers his journey in 7 hours. What is the average speed of Rajinder on this journey?

Option 1: 52 km/hr

Option 2: 48 km/hr

Option 3: 50 km/hr

Option 4: 54 km/hr

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 travelling from Mumbai to Goa covered the first 420 km at a speed of 60 km\hr and then covered the remaining 95 km at a speed of 65 km/hr. Find its average speed in km/hr.

Option 1: 63.5

Option 2: 60.86

Option 3: 62

Option 4: 62.3

Question : A man travelled a certain distance by train at the speed of 50 km/hr and walked back the same distance at the speed of 10 km/hr. If the whole journey took 12 hours, then what was the distance travelled by train?

Option 1: 100 km

Option 2: 180 km

Option 3: 150 km

Option 4: 120 km

Question : One-third part of a certain journey is covered at the speed of 10 km/hr, one-fourth part at the speed of 15 km/hr, and the rest part at the speed of 20 km/hr. What will be the average speed (in km/hr) for the whole journey?

Option 1: $15$

Option 2: $\frac{200}{17}$

Option 3: $\frac{240}{17}$

Option 4: $\frac{280}{17}$