Direction: In each of the following questions, a question is asked followed by three statements. You have to study the questions and all the three statements given and decide whether any information provided in the statement(s) is/are redundant and can be dispensed with while answering the questions.
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How much time will the train ‘X’ take to cross another train ‘Y’ running in opposite direction?
A. Train ‘X’ crosses a signal pole in 6 seconds.
B. Ratio of the speeds of trains ‘X’ and ‘Y’ is 3 : 2.
C. Length of the two trains together is 500 m.
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- A only
- B only
- C only
- A and B only
- The question cannot be answered even with the information in all the three statements.
Correct Option: E
As per the given all details in above question ,
From statement A , Time taken by train‘X’ = 6 seconds
From statement B , Ratio of the speeds of trains ‘X’ and ‘Y’ = 3 : 2
Let speed of train X is 3k and speed of train Y is 2k.
Relative speed = 3k + 2k = 5k
From statement C , Length of the two trains = 500 m
Time taken = Length of the two trains / Relative speed = 500 / 5k = 100 / k seconds
Anyone of the three statements is not sufficient to answer the question. So, anyone is not suitable statements.The question cannot be answered even with the information in all the three statements.
