The pie charts give information about the ages, in years, of people living in two towns, Adley and Bridford - Edexcel - GCSE Maths - Question 11 - 2017 - Paper 2

To find the proportion of people aged 0 - 19:

$ext{Proportion} = \frac{72}{360} = 0.2$

Calculating the number of people aged 0 – 19:

$ext{Number} = 250 \times 0.2 = 50$

Assuming Bridford's total population can be represented by a value, and if it is 250 too, then total people living are:

$250 + 250 = 500$

Now, to find the total proportion:

$\text{Total Proportion} = \frac{50}{500} = 0.1$

Convert 0.1 to a percentage for the final result and round to 3 significant figures:

$0.1 = 10\%$