JAMB - Mathematics (2012 - No. 44)
The grades of 36 students in a class test are as shown in the pie chart above. How many students have excellent?
12
9
8
7
คำอธิบาย
Excellent = 360° - (120° + 90° + 80°)
= 70°
Number of excellent students = \(\frac{70}{360} \times 36\)
= 7 students