Question
A car covers the first 40 km of a journey at 60 km/h and
the next 60 km at 90 km/h. What is the average speed for the entire journey?Solution
Time taken for first 40 km = Distance / Speed = 40 / 60 = 2/3 hours. Time taken for next 60 km = 60 / 90 = 2/3 hours. Total distance = 40 + 60 = 100 km. Total time = 2/3 + 2/3 = 4/3 hours. Average speed = Total distance / Total time = 100 / (4/3) = 75 km/h. Answer: b) 75 km/h.
Which public sector bank recently inaugurated the ‘Ethical Hacking Lab’ at the Cyber Security Centre of Excellence (CCoE) in Hyderabad?
Which summit saw Doon School Srinagar being honored with the “Award for Transformative Education Excellence”?
What was the focus of the 2nd Asia Pacific Ministerial Conference on Civil Aviation held in New Delhi?
Baghmara Pitcher Plant Sanctuary is located in which of the following states?
The Basava Sagar Dam is located in which state ?Â
Which state became the third in India to achieve full functional literacy as of June 2025?Â
Who among the following is the President of Sri Lanka?
What is the primary goal of the joint venture between Coal India Limited (CIL) and GAIL for setting up a Coal to Synthetic Natural Gas (SNG) plant?
Which Indian cricketer confirmed his T20 international retirement after winning the ICC Men’s T20 World Cup 2024?
Which project in Bangladesh will receive the highest amount of funding from the World Bank's recent agreement?
