JAMB - Mathematics (2005 - No. 35)

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

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

JAMB - Mathematics (2005 - No. 35)

Explanation

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