A bus travelling at 99 km/h completes a journey in 14 hours. At what speed will it have to cover the same distance in 18 hours?
77 km/h
To solve the problem of determining the speed at which a bus must travel to complete the same distance in 18 hours, we can follow these steps:
Step 1: Determine the total distance.
We know the initial speed of the bus is 99 km/h and it completes the journey in 14 hours. Thus, we can calculate the total distance using the formula:
Distance = Speed × Time
Distance = 99 km/h × 14 h = 1386 km
Step 2: Calculate the required speed for 18 hours.
To find the speed required to cover the same distance in 18 hours, we can rearrange the distance formula:
Speed = Distance ÷ Time
Speed = 1386 km ÷ 18 h ≈ 77 km/h
Conclusion:
The bus must travel at approximately 77 km/h to complete the journey in 18 hours. Therefore, the correct answer is 77 km/h.
Important Questions from Speed Time and Distance
- Daksh travels 200 km at 50 km/hr, the next 252 km at 42 km/hr and the next 204 km at 51 km/hr. What is his average speed (in km/hr) for the whole journey? (Round off your answer to two decimal places)
- A bus travelling at 66 km/hr completes a journey in 15 hours. What should be its speed to cover the same distance in 5 hours?
- Train A leaves station M at 8:00 a.m. and reaches station N at 3:00 p.m. on the same day. Train B leaves station N at 10:00 a.m. and reaches station M at 3:00 p.m. on the same day. Find the time when Trains A and B meet.
- A bus travelling at 95 km/hr completes a journey in 10 hours. What should be in its speed to cover the same distance in 5 hours?
Rishi travels 198 km at 66 km/hr, the next 584 km at 73 km/hr and the next 656 km at 82 km/hr. What is his average speed (in km/hr) for the whole journey? (Round off your answer to two decimal places)
