Quantitative Aptitude Ques 557
Question: Two trains running in opposite directions cross a man standing on the platform in 27 and 17 s respectively and they cross each other in 23 s. What is the ratio of their speeds?
Options:
A) 1 : 3
B) 3 : 2
C) 3 : 4
D) 1 : 2
E) 2 : 1
Show Answer
Answer:
Correct Answer: B
Solution:
- Let the speeds of two trains of x m/s and y m/s. Then, length of first train = 27 x m Length of second train = 17 y m According to the question, $ 27x+17y=23,(x+y) $
$ \Rightarrow $ $ (27-23),x=(23-17),y $
$ \Rightarrow $ $ \frac{x}{y}=\frac{6}{4}=\frac{3}{2} $
BETA
