The pie chart above shows the statistical distr... - JAMB Mathematics 2013 Question
A
30
B
11
C
50
D
20
correct option: b
5xo + (16x - 24)o + 5xo + (4x + 12)o + (6x + 12)o = 360o
360xo - 24 + 12 + 12 = 360o
36xo = 360o
xo = \(\frac{360^0}{36}\)
= 10o
Thus, the angle of sector representing Mathematics is 5 x 10o = 50o. Hence the number of students who offer mathematics is
\(\frac{55^o}{36} \times 80 \approx 11\)
360xo - 24 + 12 + 12 = 360o
36xo = 360o
xo = \(\frac{360^0}{36}\)
= 10o
Thus, the angle of sector representing Mathematics is 5 x 10o = 50o. Hence the number of students who offer mathematics is
\(\frac{55^o}{36} \times 80 \approx 11\)
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