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Railways PYQCBT 2 2017

RRB NTPC · Question 112

A portion inside a rectangle of length 5 m and breadth 2 m is shaded in the form of a square of side 2 m. What is the ratio of the area of the shaded square to the unshaded portion of the rectangle?

  1. 3 : 2

  2. 2 : 3

  3. 5 : 2

  4. 2 : 5

Show answer & explanation

Answer: (B) 2 : 3

Explanation

Rectangle area = 5 × 2 = 10 sq m; the shaded square = 2 × 2 = 4 sq m, so the unshaded part = 6 sq m. The ratio is 4 : 6 = 2 : 3.