The first thing we must do for this case is find the percentage of people who have less than 16.
We have then:
[tex]x = (200/1000) * (100)
x = 20%
[/tex]
We are now looking for the number of people who have less than 16 in the UK.
We have then:
[tex]y = 0.20 * 60,000,000
y = 12,000,000[/tex]
Then, the number of people under the age of 16 who had the vision tests are:
[tex]z = (0.20) * (12,000,000)
z = 2,400,000[/tex]
Answer:
2,400,000 people under 16 had their sight tested last year across the UK