Question
Download Solution PDFA train passes a platform in 36 seconds and a man standing on the platform in 20 seconds. If the speed of the train is 54 km per hour, what is the length of the platform?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
Speed of the train = 54 km/h
Time taken to pass the platform = 36 seconds
Time taken to pass a man = 20 seconds
Formula Used:
Length of the train = Speed × Time taken to pass a man
Length of the platform = Speed × Time taken to pass the platform - Length of the train
Calculation:
Speed in m/s = 54 × (1000 / 3600) = 15 m/s
Length of the train = 15 × 20 = 300 m
Length of the platform = 15 × 36 - 300
⇒ Length of the platform = 540 - 300
⇒ Length of the platform = 240 m
The correct answer is option 2.
Last updated on May 21, 2025
->The CSIR Junior Secretariat Assistant Provisional Response Sheet has been released on 21st May 2025 at the official website.
-> The CSIR Junior Secretariat Assistant Notification 2025 written examination dates has been released for Advt No. CRRI/02/PC/JSA-JST/2025.
-> Candidates had applied online from 22nd March to 21st April 2025.
-> The CSIR JSA salary ranges from INR 19,900 - INR 63,200 (Indian Institute of Petroleum, Dehradun) 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.