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Railways PYQCBT 1 2016

RRB NTPC · Question 22

The ratio of length, width and height of a room is 3 : 2 : 1. If its volume is 3072 cubic meters, find its width. A. 18 meters B. 16 meters C. 24 meters D. 12 meters

  1. B

  2. C

  3. D

  4. A

Show answer & explanation

Answer: (A) B

Explanation

Let the sides be 3x, 2x and x. Volume = 6x³ = 3072, so x³ = 512 and x = 8. Width = 2x = 16 m.