SATHEE: Quantitative Aptitude Ques 57

Quantitative Aptitude Ques 57

Question: A train running at speed 54 km/h crosses a passenger standing on a platform of length 200 m in 10 s. Length of train is [FCI (Assistant) 2015]

Options:

A) 140 m

B) 154 m

C) 145 m

D) 150 m

Show Answer

Answer:

Correct Answer: D

Solution:

Let length of train be x m.

$ \therefore $ Time taken by train to cross the passenger $ =\frac{Length,of,train}{Speed,of,train} $

$ \Rightarrow $ $ 10\text{=}\frac{x}{54\times \frac{5}{18}} $
$ \Rightarrow $ $ 10=\frac{x\times 18}{54\times 5} $

$ \Rightarrow $ $ x=\frac{10\times 54\times 5}{18} $
$ \Rightarrow $ $ x=3\times 50 $

$ \therefore $ $ x=150,m $ So, length of train = 150 m Here, train crosses a passenger, so length of platform will not be added in the length of train.

Quantitative Aptitude Ques 56

Quantitative Aptitude Ques 58

Quantitative Aptitude Ques 57

Question: A train running at speed 54 km/h crosses a passenger standing on a platform of length 200 m in 10 s. Length of train is [FCI (Assistant) 2015]

Options:

Answer:

Solution:

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