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JAMB Mathematics 1993 Question 42

Question 42

Data Presentation

Quantities in the proportions 1, 4, 6, 7 are to be represented in a pie chart. Calculate the angle of the sector with proportion 7.

  1. A.20°
  2. B.80°
  3. C.120°
  4. D.140°
Show the answer and explanation

Answer: D (140°)

Explanation

The proportions add up to 18, so the angle is 7/18 × 360° = 140°.