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WAEC Mathematics 2006 Question 45

Question 45

Mensuration of Plane Shapes

A rectangular carpet 2.5 m long and 2.4 m wide covers 5% of a rectangular floor. Calculate the area of the floor.

  1. A.30 m2
  2. B.57 m2
  3. C.120 m2
  4. D.225 m2
Show the answer and explanation

Answer: C (120 m2)

Explanation

Carpet area = 2.5 × 2.4 = 6 m2, which is 5% of the floor. Floor = 6 × 100/5 = 120 m2.