Vote percentage calculation

Pictured is a pie chart showing how the four mayoral candidates are doing after 80% of the vote has been counted. A candidate ID no can theoretically obtain the maximum percentage of votes. 3 after counting all the votes?

Final Answer:

p =  36 %

Step-by-step explanation:

$$\begin{gathered} p_3=\frac{3}{15}=\frac{1}{5}=0.2 \\ r=80\%=\frac{80}{100}=\frac{4}{5}=0.8 \\ q=1-r=1-0.8=\frac{1}{5}=0.2 \\ p=100\cdot (\frac{3}{15}\cdot r\cdot n+q\cdot n)/n \\ p=100\cdot (\frac{3}{15}\cdot r+q)=100\cdot (\frac{3}{15}\cdot 0.8+0.2)=36\% \end{gathered}$$

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