Multiple choice

Directions: The following problem has a question and two statements labelled (1) and (2). You have to decide whether the statements are sufficient to answer the question. Mark your answer as

A plane flies over New Delhi. What is its speed in km per hour?

(1) The plane is flying in a circle. (2) The plane is flying at the speed of 1/9 km per second.

  1. if you can get the answer from (1) alone, but not from (2) alone

  2. if you can get the answer from (2) alone, but not from (1) alone

  3. if you can get the answer from (1) and (2) together, although neither statement by itself suffices

  4. if (1) alone suffices and (2) alone suffices

  5. if you cannot get the answer from (1) and (2) together, and need even more data

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In statement (1), no information is given regarding the speed of the plane. From statement (2), it is given that in 1 second, the plane covers = 1/9 km. So, in 3600 seconds, the plane covers = 400 km. This implies that the speed of the plane is 400 km/hr. So, the correct option is (2).

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