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WAEC Mathematics 2016 Question 6

Question 6

Ratio, Percentages and Rates

On a map, 1 cm represents 5 km. Find the area on the map that respresents 100 km2.

  1. A.2 cm2
  2. B.4 cm2
  3. C.8 cm2
  4. D.16 cm2
Show the answer and explanation

Answer: B (4 cm2)

Explanation

1 cm² on the map is 5 × 5 = 25 km², so 100 km² is 100 ÷ 25 = 4 cm².