Based on the bar-graph provided in image_80f91d.png showing the sales and profit (both in ) of company Z across four years, what was the approximate percentage profit margin on revenue of company Z in 2016?

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Solution & Step-by-step Explanation
From the given bar-graph, the data for company Z in the year 2016 is:
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The formula for the percentage profit margin on revenue is:
Substituting the values:
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The formula for the percentage profit margin on revenue is:
Substituting the values: