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JAMB Mathematics 1985 Question 48

Question 48

Data Presentation

In a class of 120 students, 18 of them scored an A grade in Mathematics. If the section representing the A grade students on a pie chart has angle Z° at the centre of the circle, what is Z?

  1. A.15
  2. B.27
  3. C.50
  4. D.52
  5. E.54.
Show the answer and explanation

Answer: E (54.)

Explanation

Z = 18/120 × 360° = 54°.