Quantitative Aptitude Ques 2168
Question: Two trains each 220 m long are travelling at 45 km/h and 54 km/h in opposite directions. They will cross each other in
Options:
A) 12 s
B) 18 s
C) 16 s
D) 24 s
Show Answer
Answer:
Correct Answer: C
Solution:
- Trains are running towards each other
Length of train $ 1,(l _1)= $ Length of train $ 2(l _2)=220 $ [given]
Speed of train 1 $ (S _1) $ = 45 km/h
Speed of train 2 $ (S _2) $ = 54 km/h
Time taken to cross each other $ =\frac{l _1+l _2}{S _1+S _2} $
$ =\frac{440}{45+54}=\frac{440,m}{99\times \frac{5}{18}} $
$ =\frac{440}{99\times 5}\times 18=16,s $