\begin{center}\begin{large}Smartphone use\end{large}\end{center}

The spreadsheet shows the population (in millions) and the number of smartphone
users (in millions) for a range of countries in Asia. The data has been sorted by
country name.

\begin{center}
{\noindent\begin{tabularx}{.49\linewidth}{|X|>{\raggedleft}X|>{\raggedleft}p{1.65cm}|>{\raggedleft \arraybackslash}X|}\hline
	\cellcolor[gray]{1}\begin{small}Column A\end{small} & \cellcolor[gray]{.8}\begin{small}Column B\end{small} & \cellcolor[gray]{.8}\begin{small}Column C\end{small} & \cellcolor[gray]{.8}\begin{small}Column D\end{small}\\
	\multicolumn{1}{|c|}{\cellcolor[gray]{1}\includegraphics[width=.5cm]{PISA/2022/PISA_2022_Mathematics_items_Exo1_IMG1.jpg}} & \multicolumn{1}{c|}{\cellcolor[gray]{.8}\includegraphics[width=.5cm]{PISA/2022/PISA_2022_Mathematics_items_Exo1_IMG2.jpg}} & \multicolumn{1}{c|}{\cellcolor[gray]{.8}\includegraphics[width=.5cm]{PISA/2022/PISA_2022_Mathematics_items_Exo1_IMG2.jpg}} & \multicolumn{1}{c|}{\cellcolor[gray]{.8}\includegraphics[width=.5cm]{PISA/2022/PISA_2022_Mathematics_items_Exo1_IMG2.jpg}} \\
	\hline
	\multicolumn{1}{|>{\centering}X|}{\begin{small}\textbf{Country}\end{small}} & \multicolumn{1}{>{\centering}X|}{\begin{small}\textbf{Population (in millions)}\end{small}} & \multicolumn{1}{>{\centering}p{1.65cm}|}{\begin{scriptsize}\textbf{Number of smartphone users (in millions)}\end{scriptsize}} & \multicolumn{1}{>{\centering \arraybackslash}X|}{\begin{small}\textbf{Proportion of smartphone users}\end{small}}\\
	\hline
	Bangladesh  & 166.735 &  8.921 & \\
	\hline
	Indonesia   & 266.357 & 67.57  & \\
	\hline
	Japan       & 125.738 & 65.282 & \\
	\hline
	Malaysia    &  31.571 & 20.98  & \\
	\hline
	Pakistan    & 200.663 & 23.228 & \\
	\hline
	Philippines & 105.341 & 28.627 & \\
	\hline
	Thailand    &  68.416 & 30.486 & \\
	\hline
	Turkey      &  81.086 & 44.771 & \\
	\hline
	Vietnam     &  96.357 & 29.043 & \\
	\hline
\end{tabularx}}
\end{center}

\begin{enumerate}
	\item Which operation on columns B and C will determine the correct values in Column D?
	
	\underline{For each country:}
	
	\begin{enumerate}
		\item Divide the Column B value by the Column C value: $B / C$
		\item Divide the sum of the Column B and Column C values by the Column C value: $(B + C) / C$
		\item Divide the Column C value by the Column B value: $C / B$
		\item Divide the Column B value by the sum of the Column B and Column C values: $B / (B + C)$
	\end{enumerate}
\end{enumerate}

