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Consider the given question and decide which of the following statement is sufficient to answer the question. Two trains X and Y starts from point A and B respectively towards each other. What is the distance between them when they start? Statements: 1. When both trains cross each other, the time taken by train X to reach B is twice the time taken by train Y to reach A. 2. Distance between them after 120 min. is 240 km.

Consider the given question and decide which of the following statement is sufficient to answer the question. Two trains X and Y starts from point A and B respectively towards each other. What is the distance between them when they start? Statements: 1. When both trains cross each other, the time taken by train X to reach B is twice the time taken by train Y to reach A. 2. Distance between them after 120 min. is 240 km. Correct Answer Neither 1 nor 2 is sufficient to answer the given question.

Given:

Trains = X and Y

Formula used:

Speed = Distance/Time 

From statement 1:

Time taken by B = twice A

⇒ We need speed and distance of both the train. We can not calculate it from statement 1.

From statement 2:

Distance = 240 km

Time = 2 hours

⇒ We need the speed of trains. We can not calculate distance without speed.

∴ Neither 1 nor 2 is sufficient to answer the given question.

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