Question
Logical Reasoning Question on Data Sufficiency
The question below consists of a question and two statements numbered I and II given below it. You have to decide whether the data provided in the statements are sufficient to answer the question. Read both the statements and give answer
A train crosses a signal post in X seconds. What is the length of the train?
I. The train crosses a platform of 100 meters in Y seconds.
II. The train is running at the speed of 80 km/hr.
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.
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.
the data either in statement I alone or in statement II alone are sufficient to answer the question.
the data even in both statements I and II together are not sufficient to answer the question.
the data even in both statements I and II together are not sufficient to answer the question.
Solution
Let's analyze each statement:
Statement I: The train crosses a 100-meter platform in 𝑌 Y seconds but doesn't provide the time to cross a signal post or the train's speed.
Statement II: The train's speed is 80 km/h but no time is given for crossing a signal post or platform.
Even together, these statements don't provide enough information to calculate the train's length.
So, the correct option is (D): Both statements together are not sufficient to answer the question.