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

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

Answer Details

Angle of Excellent
= 360 - (120+80+90)
= 360 - 290
= 70${}^{\circ }$
If 360${}^{\circ }$ represents 36 students
1${}^{\circ }$ will represent 36/360
50${}^{\circ }$ will represent 36/360 * 70/1
= 7