Question
A car moves from city ‘A’ to city ‘B’ at 50 km/h
and returns back from city ‘B’ to city ‘A’ at 75 km/h. Find the car’s average speed during the entire round trip.Solution
ATQ,
Let the distance between city ‘A’ and ‘B’ = D km
Average speed = Total distance / Total time
Average speed = (D + D) / [(D / 50) + (D / 75)]
= 2D / [(3D + 2D)/150]
= 2D / (5D / 150)
= (2D / 5D) × 150
= 60 km/h
According World Press Freedom Index 2022 which country is 3rd top most country in the Index?
Which of the following committee was formed to assess the functioning of the Indian Monetary System (1985)?
1. Which of the following is not a permanent member of United Nation Security Council (UNSC)?
Nahar Wildlife Sanctuary is located in which state of India?
Which city police got "Pink Hoysalas" to patrol the streets for the safety of women and children?
Which one is odd among the following group?
The National Institute of Hydrology is based in which city?
Which are the participating institution in call money market
Which of the following schemes is related to the improvement of Rural Infrastructure?
Which Indian public sector unit (PSU) secured orders worth over ₹11,000 crore for thermal power projects?
Relevant for Exams:
