Reading a value from a stacked bar chart.
", "licence": "Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International"}, "statement": "", "advice": "Since we are interested in {year}, we can concentrate on this bar.
We need the value for numbers of children, and numbers of adults.
We can read the child value by looking at the height of the child bar, in this case {printchild}.
The value for adults is slightly trickier, as this is a stacked bar chart, we need to find the height of just the adult component.
We find this by calculating
$\\var{printadult+printchild} - \\var{printchild} = \\var{printadult}$.
To find this as a percentage we calculate the adults as a fraction of the total, and then multiply by 100 (to convert to a percentage)
i.e.
\n$\\frac{\\var{printadult}}{\\var{printadult+printchild}} \\times 100$
\n$=\\var{answer} %$.
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