The given diagram shows the students who picked their favourite colour. What is the fraction of students having their favourite colour red to the total number of students?
A
610
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B
420
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C
310
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D
820
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Solution
The correct option is C310 Total number of students = 8 + 6 + 2 + 4 = 20
Number of students whose favorite colour is red = 6
The fraction of students having their favorite colour red to the total number of students = 620
Let's write this in simplest form.
Divide numerator and denominator by 2.
Therefore, 620=6÷220÷2=310