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JAMB Mathematics 1983 Question 27

Question 27

Data Presentation

Find the angle of the sectors representing each item in a pie chart of the following data
6, 10, 14, 16, 26

  1. A.15°, 25°, 35°, 40°, 65°
  2. B.60°, 100°, 140°, 160°, 260°
  3. C.6°, 10°, 14°, 16°, 26°
  4. D.30°, 50°, 70°, 80°, 130°
  5. E.None of the above.
Show the answer and explanation

Answer: D (30°, 50°, 70°, 80°, 130°)

Explanation

The total is 72, so each item gets (value/72) × 360° = value × 5°: 30°, 50°, 70°, 80°, 130°.