a train is book to do the run between two places 55 KM apart in 1 hour 20 minutes. if it travels for the first 30 km at 36 km an hour ,at what speed must it travel for the rest of the distance in order to complete the journey time
Answers
The speed at which the train must cover the remaining distance is 50 km/hr.
- Given:
Total distance between the trains = 55 km
Total time to be taken by the train = 1 hr 20 min = 1.333 hr. (Converting time in hours)
Speed of the train to cover first 30 km = 36 km/hr.
- Time taken by the train to cover the first 30 km distance = 30/36 = 0.833 hr
- Remaining distance = 55 - 30 = 25 km
- Remaining time = 1.333 - 0.833 = 0.5 hr.
- Now, speed = Distance / time
Speed = 25 / 0.5 = 50 km/hr
- The train must travel at a speed of 50 km/hr to complete the rest of the journey in time.
Answer:
The speed at which the train must cover the remaining distance is 50 km/hr.
Given:
Total distance between the trains = 55 km
Total time to be taken by the train = 1 hr 20 min = 1.333 hr. (Converting time in hours)
Speed of the train to cover first 30 km = 36 km/hr.
Time taken by the train to cover the first 30 km distance = 30/36 = 0.833 hr
Remaining distance = 55 - 30 = 25 km
Remaining time = 1.333 - 0.833 = 0.5 hr.
Now, speed = Distance / time
Speed = 25 / 0.5 = 50 km/hr
The train must travel at a speed of 50 km/hr to complete the rest of the journey in time.
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