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26 Oct 2023, 01:30
Kudos
Bookmarks
A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
35%
(medium)
Question Stats:
73% (02:24) correct
27%
(02:38)
wrong
based on 64
sessions
History
Date
Time
Result
Not Attempted Yet
A train 200 m long is traveling at a speed of 60km/h. How long will the train take to pass a person walking 3 km/h in the opposite direction?
A. 80/7 seconds
B. 10 seconds
C. 80/9 seconds
D. 8 seconds
E. 80/11 seconds
A. 80/7 seconds
B. 10 seconds
C. 80/9 seconds
D. 8 seconds
E. 80/11 seconds
26 Oct 2023, 03:34
Kudos
Bookmarks
Bunuel
Speed of train : 60 km/h
Speed of person : 3 km/h
Relative speed : \(60+3=\frac{63 km}{h}*\frac{5}{18}=\frac{7*5}{2}m/s \)
Distance to cover : 200 m
Time taken : \(\frac{200}{(7*5)/2}=\frac{80}{7}\)
26 Oct 2023, 05:58
Kudos
Bookmarks
Bunuel
OA is A, we need to convert eithee train length to Km or speed in m/s but since answer in seconds, we can convert speed in m/s
We can solve using below method
Posted from my mobile device
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