Question
A car starts from point A and travels at a speed of 60
km/h for the first 2 hours, then increases its speed to 80 km/h for the next 3 hours. After that, it reduces its speed to 50 km/h for the next 4 hours. What is the average speed of the car for the entire trip?Solution
Distance covered in the first 2 hours = 60 km/h × 2 = 120 km. Distance covered in the next 3 hours = 80 km/h × 3 = 240 km. Distance covered in the next 4 hours = 50 km/h × 4 = 200 km. Total distance covered = 120 km + 240 km + 200 km = 560 km. Total time taken = 2 hours + 3 hours + 4 hours = 9 hours. Average speed = Total distance / Total time = 560 km / 9 hours = 62.22 km/h ≈ 62 km/h. Correct option: b
Which of the following provisions of the Indian Constitution can be amended only by the general majority of the two Houses in the Parliament?
In the 1939 Tripuri Congress Presidential Election, Pattabhi Sitaramayya was defeated by:
Which of the following is NOT a coniferous tree?
Who among the following are the first-ever brother-sister duo to become Grandmasters in chess?
Who among the following is the author of the book The Indian Struggle'?
Which company was awarded the 'Golden Peacock Environment Management Award 2023' in the Power Transmission Sector?
- Who is the secretary general of United Nations?
Sweet Revolution is related with _________.
The most famous musician at the court of Mughal Emperor Akbar was Tansen. His original name was:
What is the minimum pension provided under the NPS Vatsalya scheme?
