Question 41

Jambmaths question: 

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

Option A: 

12

Option B: 

9

Option C: 

8

Option D: 

7

Jamb Maths Solution: 

Total angle at a  point in the pie chart

120o + 80 o + 90 o + xo = 360o

290o + xo = 360o

xo = 70o

In the pie chart, the students who have excellent grade took 70o in the pie chart.

The actually value of those whose grade are excellent is $\frac{{{70}^{\circ }}}{360}\times 36=7$

Jamb Maths Topic: 
Year of Exam: