Mathematics

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

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
Correct Answer: Option A
Explanation

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