Question

The ratio of the number of people living in Adley to the number of people living in Bridford is given by the ratio of the areas of the pie charts. What proportion of the total number of people living in these two towns live in Adley and are aged 0-19? Give your answer to 3 significant figures. (The method on how to answer would be appreciated).

Answer 1

Step 1:
meassure angle for group 0-19 that lives in Adley
Step 2:
divide this angle by 360. this is proportional of that group in total number of people in Adley

Repeat these steps for group 0-19 in Bridford.

Final solution can be found by multiplying the two solutions of step 2.