2005 - JAMB Mathematics Past Questions and Answers - page 6
51
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 option: a
360o - 36 students
70o(Excellent grade) = \(\frac{70}{360}\) x 36 = 7
N.B Excellent degree = 360o - (120o + 80o + 90o)
= 360o - 290o = 70o
Users' Answers & Comments70o(Excellent grade) = \(\frac{70}{360}\) x 36 = 7
N.B Excellent degree = 360o - (120o + 80o + 90o)
= 360o - 290o = 70o