Question
Download Solution PDFA man drives his car for 24 km at a speed of 48 km/h, and for the next 1.5 hours he drives at a speed of 80 km/h. Find his average speed (in km/h) for the entire journey.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven :
A man drives his car for 24 km at a speed of 48 km/h.
Next 1.5 hours he drives at a speed of 80 km/h.
Formula Used :
Average Speed = Total distance travelled/Total time taken
Calculation :
Time taken for 24 km = 24/48 = 0.5 hours
Distance covered in 1.5 hours = 80 × 1.5 = 120 km
Average Speed = 120 + 24/(1.5 + 0.5)
⇒ 144/2 = 72 km/hr
∴ The correct answer is 72 km/hr.
Last updated on Jul 22, 2025
-> The IB Security Assistant Executive Notification 2025 has been released on 22nd July 2025 on the official website.
-> The SSC CGL Notification 2025 has been announced for 14,582 vacancies of various Group B and C posts across central government departments.
-> The SSC CGL Tier 1 exam is scheduled to take place from 13th to 30th August 2025 in multiple shifts.
-> In the SSC CGL 2025 Notification, vacancies for two new posts, namely, "Section Head" and "Office Superintendent" have been announced.
-> Candidates can refer to the CGL Syllabus for a better understanding of the exam structure and pattern.
-> The CGL Eligibility is a bachelor’s degree in any discipline, with the age limit varying from post to post.
-> The SSC CGL Salary structure varies by post, with entry-level posts starting at Pay Level-4 (Rs. 25,500 to 81,100/-) and going up to Pay Level-7 (Rs. 44,900 to 1,42,400/-).
-> Attempt SSC CGL Free English Mock Test and SSC CGL Current Affairs Mock Test.