Multiple choice

Find the length of train A Statement I: Ratio of the speeds of Train A and Train B is 2:3. Statement II: Length of train B is 30% more than that of train A.

  1. If the data in statement I alone are sufficient to answer the question, while the data in statement II alone are not sufficient to answer the question

  2. If the data in statement II alone are sufficient to answer the question, while the data in statement I alone are not sufficient to answer the question.

  3. If the data either in statement I alone or in statement II alone are sufficient to answer the question.

  4. If the data even in both the statements I and II together are not sufficient to answer the question.

  5. If the data in both the statements I and II together are necessary to answer the question.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

To find a train's length, we need at least one absolute measurement (actual length or speed with time to cover a distance). Statement I only gives relative speeds, and Statement II only gives relative length. With no anchor values, we cannot determine the actual length of train A.

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