Question
Download Solution PDFA train 125 m long passes a man running at 5 km per hour in the same direction in which the train is going, in 10 seconds. What is the speed of the train?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
Length of the train = 125 m
Speed of the man = 5 km/hr
Time taken to pass the man = 10 seconds
Formula Used:
Speed of train relative to man = Distance / Time
Speed of the train (actual) = Speed of train relative to man + Speed of the man
1 m/s = 3.6 km/hr
Calculation:
Distance covered by the train = 125 m
Time taken = 10 seconds
Speed of train relative to man = 125 / 10
Speed of train relative to man = 12.5 m/s
Speed of train relative to man in km/hr = 12.5 × 3.6
Speed of train relative to man in km/hr = 45 km/hr
Speed of the train (actual) = 45 km/hr + 5 km/hr
Speed of the train (actual) = 50 km/hr
The speed of the train is 50 km/hr.
Last updated on Jun 24, 2025
-> The CSIR Junior Secretariat Assistant 2025 has been released for 9 vacancies.
-> Candidates can apply online from 17th June to 7th July 2025.
-> The CSIR JSA salary ranges from INR 19,900 - INR 63,200 (Indian Institute of Petroleum, Dehradun & Institute of Microbial Technology) and INR 35,600 (Indian Institute of Toxicology Research).
-> The selection of candidates for this post will be based on a Written Exam, followed by a Computer Typing Test.
-> Prepare for the exam with CSIR Junior Secretariat Assistant Previous Year Papers.