Aptitude:: Problems on Trains

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Each of the questions given below consists of a question followed by three statements. You have to study the question and the statements and decide which of the statement(s) is/are necessary to answer the question.

What is the speed of the train? I. The train crosses a tree in 13 seconds. II. The train crosses a platform of length 250 metres in 27 seconds. III. The train crosses another train running in the same direction in 32 seconds.

A. A. I and II only
B. B. II and III only
C C I and III only
D. D. Any two of the three
E. E. None of these

What is the speed of the train?

I. The train crosses a tree in 13 seconds.

II. The train crosses a platform of length 250 metres in 27 seconds.

III. The train crosses another train running in the same direction in 32 seconds.

A. I and II only
B. II and III only
C I and III only
D. Any two of the three
E. None of these

What is the speed of the train?

I. The train crosses a signal pole in 18 seconds.

II. The train crosses a platform of equal length in 36 seconds.

III. Length of the train is 330 metres.

A. I and II only
B. II and III only
C I and III only
D. III and either I or II only
E. Any two of the three