The pie chart shows the distribution of 4320 st... - WAEC Mathematics 2009 Question
The pie chart shows the distribution of 4320 students who graduated from four departments in a university. How many students graduated from the science department?
A
840
B
864
C
920
D
960
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Correct Option: B
(\frac{\text{science}}{\text{graduates}}) = (\frac{\theta}{360}) x 4320
where (\theta) + 100 + 80 + 108 = 360
(\theta) = 360 - 288 = 360
(\frac{\text{science}}{\text{graduates}}) = (\frac{72}{360} \times 4320)
= 864
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