Each question below is followed by two statements I, II and III. 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 length of the platform? Statement I: The train crosses a pole in 12 seconds Statement II: The train crosses the platform in 27 seconds Statement III: The length of the train is 240 meters
Each question below is followed by two statements I, II and III. 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 length of the platform? Statement I: The train crosses a pole in 12 seconds Statement II: The train crosses the platform in 27 seconds Statement III: The length of the train is 240 meters Correct Answer Data in statement I, II, and III together are sufficient to answer the question.
Calculation:
From statement I
The speed of the train is unknown. We cannot determine the length of the platform.
So, the statement I alone is not sufficient to answer the question.
From statement II
The length of the train is unknown. We cannot determine the length of the platform.
So, the statement II alone is not sufficient to answer the question.
From statement III
The speed of the train is unknown. We cannot determine the length of the platform.
So, the statement III alone is not sufficient to answer the question.
From statement I, statement II and statement III together
Speed of the train = 240/12
⇒ 20 m/sec
Distance covered by train in 27 seconds = 20 × 27
⇒ 540 meter
Length of platform = 540 – 240
⇒ 300 meter
So, the statement I, statement II, and statement III together are sufficient to answer the question.
∴ Statement I, statement II, and statement III together are sufficient to answer the question.