Applying Maths to solve problems in the real world…

Harry Potter Bar Chart

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GCSE Text: A popular tourist attraction opened in 2012. This bar chart shows the revenue (income) for the first 5 years that it was open.

Calculate the sum of the revenues for the first 5 years.

If the increase in revenue between 2015 and 2016 continues year on year after 2016, give an estimate for the revenue this year.

2012’s revenue figure is not accurate as the attraction was only open for 9 months of the year. Give an estimate for the 2012 revenue if it had been open for the full year.

Suggestions:
This question works well as a starter for high ability classes, particularly if you ask them to answer without using a calculator. The first two questions also practice GCSE language (sum, increase) and are accessible to students of all abilities. Students take 4-5 minutes to answer this question in full, and the extension question works well to stretch students who finish early.

Teachers could extend the learning by considering:

Greg says that the increase in revenue year on year is only due to ticket prices increasing. What other reason could there be for this steady increase?