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In a class of 120 students, 18 of them scored an A grade in mathematics....

Mathematics
JAMB 1985
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 Zo at the centre of the circle, what is Z?
  • A. 15
  • B. 27
  • C. 50
  • D. 52
  • E. 54
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Correct Answer: Option E
Explanation
Total students = 120

grade = 18

Zo = \(\frac{18}{120}\) x \(\frac{360}{1}\)

= 54o
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