The grades of 36 students in a test are shown in the pie chart above....

Mathematics

JAMB 2005

The grades of 36 students in a test are shown in the pie chart above. How many students had excellent?

A. 7
B. 8
C. 9
D. 12

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Correct Answer: Option A

Explanation

Angle of Excellent
= 360 - (120+80+90)
= 360 - 290
= 70^o
If 360^o represents 36 students
1^o will represent ³⁶/₃₆₀
50^o will represent ³⁶/₃₆₀ * ⁷⁰/₁
= 7

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The grades of 36 students in a test are shown in the pie chart above....

Correct Answer: Option A

Explanation

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