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The following questions are accompanied by two statements, I and II. Determine which statement(s) is/are sufficient to answer the question. Q58. Find the length of train B. I. The length of train A is the same as the length of train B. II. Train A can cross a pole in 10 seconds, and train A can cross a 150-meter-long platform in 17.5 seconds.
- Neither statement (I) nor statement (II) by itself is sufficient to answer the question.
- Statement (II) alone is sufficient to answer the question but statement (I) alone is not sufficient to answer the question.
- Either statement (I) or statement (II) by itself is sufficient to answer the question.
- Both the statements taken together are necessary to answer the question, but neither statement alone is sufficient to answer the question.
Correct answer: Both the statements taken together are necessary to answer the question, but neither statement alone is sufficient to answer the question.
Solution
Statement I only tells us that the lengths of trains A and B are equal, but not their actual length. Statement II allows us to find the length of train A using the pole and platform data, but it does not directly give B's length unless combined with Statement I. Therefore, both statements together are needed.
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