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Railways PYQCBT 1 2016

RRB NTPC · Question 30

One question and three statements are numbered (I), (II) and (III). You have to decide whether the facts given in the statements are sufficient to answer the question given below. Question: What is the length of the rectangle? Statement: I. The perimeter of the rectangle is 80 meters. II. The sum of the adjacent sides is 40 meters. III. The width of the rectangle is 10 meters. Choose the correct option. A. Only I is sufficient. B. Only I and II are sufficient. C. III and one from I or II are sufficient. D. II and one from I or III are sufficient.

  1. D

  2. A

  3. B

  4. C

Show answer & explanation

Answer: (D) C

Explanation

I and II both only give length + breadth = 40 m, so neither alone gives the length. Adding III (breadth 10 m) to either gives length = 40 − 10 = 30 m. So III with one of I or II is sufficient.