How is ordering measurements different from ordering a set of numbers? how is it the same?

With number 11 ( show how you got the answer)

Iam at home. /: i am playing video games. translate the following statement into symbolic form.

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.