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 : In a 5 km race, S gave a 500 m head start to T. If they finished the race at the same time and the speed of T is 13.5 km/hr, the speed of S is:

Option 1: 15 km/hr

Option 2: 20 km/hr

Option 3: 17.5 km/hr

Option 4: 16.5 km/hr

Question : Aman decided to cover a distance of 12 km in 78 minutes. He decided to cover the initial two-thirds of the distance at 10 km/hr and the remaining at some different speed. Find the speed for the last one-third of the distance.

Option 1: 7.8 km/hr

Option 2: 8 km/hr

Option 3: 8.4 km/hr

Option 4: 9 km/hr

Question : Mohan completed a certain journey by car. If he covered 30% of the distance at 90 km/hr, 45% of the distance at 135 km/hr, and the remaining distance at 75 km/hr. His average speed (in km/hr) for the entire journey is:

Option 1: 100

Option 2: 90

Option 3: 105

Option 4: 95

Question : A boat can move upstream at 25 km/hr and downstream at 35 km/hr. What is the speed of the current?

Option 1: 10 km/hr

Option 2: 15 km/hr

Option 3: 5 km/hr

Option 4: 22.5 km/hr