Multiple choice

Directions: In the following question, a given questions is followed by information in three statements. You have to decide the data in which statement (s) is sufficient to answer the question and mark your answer accordingly. Find the length of the train P? Statement I - The train P cross the train Q in 6 sec when train Q is not moving. Train Q cross train R in68 sec when both are moving same direction, speed of train R is 25m/sec. Statement II - Train P cross train R in 64 sec when both are moving same direction. Length of train Q is 140m.

  1. Only Statement I alone.

  2. Only Statement II alone.

  3. Both Statements I and II together.

  4. Neither Statement I nor II is sufficient.

  5. Either Statement I or II.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Statement I gives several relative-speed equations but does not provide enough independent information to determine the length of train P. Statement II also leaves unknown train speeds and lengths, and combining both statements still does not determine P uniquely.

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