Answer: Asia-25% or 1/4. Europe-23% or 23/100. Africa-28% or 7/25
Explanation:
there are 194 countries in the world 
there are 48 countries in Asia 
there are 44 countries in Europe 
there are 54 countries in Europe 
Number of countries divided by 194 (the total) then multiply the answer by 100 to get your percentage. Then just put the answer in the numerator and 10. In the denominator