A survey asked students to choose their favorite social networking website. The results are shown in the table. What fraction of students chose website a? Write your answer in simplest form.

The required fraction is [tex]\frac{7}{16}[/tex].
From the table, the total number of students is = 35 + 13 + 22 + 10 = 80.
Among them 35 students like website a.
So the required fraction is = [tex]\frac{35}{80}=\frac{7}{16}[/tex].
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