One challenge faced by the eastern european union is

One of the many challenges faced by European Union is the departure of Britain (UK) from the European Union also known as Brexit.

Explanation:

European Union is a community in which the European countries have pledged their sovereignty and loyalty to the European community. They have made laws and regulations which they promptly follow.

The European Union consist of approximately 28 countries, mostly which are the countries which had participated in World war II and/or were communist.

part a. there were 250 teenagers surveyed (100% of tenagers = 250)therefore 1 % = 250/100 = 2.5 76% = 1% x 76 = 2.5 x 76 = 190 teenagers of the 250 surveyed liked burgerspart b: jane surveyed 25% (which is equal to 50 teenagers, i.e. a quarter of the teenagers surveyed is 50) to get 100% we simply get 4 quarters, i.e. multiply 50 by 4 = 200 teenagers were surveyed by jane. part c: it is impossible to give an example where a percentage is greater than 100%, since, by definition , percentage means "per 100".