Jambmaths question:
The grade of 36 students in a test shown in the pie chart . How many students had excellent?
Option A:
12
Option B:
7
Option C:
8
Option D:
9
Jamb Maths Solution:
$\begin{align} & \text{The sector angle of those who had excellent} \\ & {{360}^{o}}-({{90}^{o}}+{{80}^{o}}+{{120}^{o}})={{70}^{o}} \\ & {{70}^{o}}\text{ in the sector will be }\frac{{{70}^{o}}}{{{360}^{o}}}\times 36=7 \\ & \text{7 students had excellent} \\\end{align}$
Jamb Maths Topic:
Year of Exam: