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Each question below is followed by two statements I and II. You have to determine whether the data given in the statements are sufficient for answering the question. You should use the data and your knowledge of mathematics to choose the best possible answer. What is the speed of a 175-meter long train? I. The train crosses a pole in 10 seconds. II. The train crosses a tunnel in 18 seconds.

Each question below is followed by two statements I and II. You have to determine whether the data given in the statements are sufficient for answering the question. You should use the data and your knowledge of mathematics to choose the best possible answer. What is the speed of a 175-meter long train? I. The train crosses a pole in 10 seconds. II. The train crosses a tunnel in 18 seconds. Correct Answer <p>If the data in statement I alone is sufficient to answer the question, while the data in statement II alone are not sufficient to answer the question.</p>

Calculation:

From statement I

Distance covered by the train in 10 seconds = 175 meter

Speed of the train = 175/10

⇒ 17.5 m/s

So, the statement I alone is sufficient to answer the question.

From statement II

Let the length of the tunnel is x meters.

Distance covered by the train in 18 seconds = (175 + x) meter

Speed of train = (175 + x)/18 m/s

So, statement II alone is not sufficient to answer the question.

∴ The data in statement I alone is sufficient to answer the question, while the data in statement II alone are not sufficient to answer the question.

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