What fraction am I?

This task is about working with simple fractions.
 
a)
One of my equivalent fractions is \(1 \over 2\) and my denominator is 10.
 
 

What fraction am I? __________
 
 
b)
One of my equivalent fractions is \(1 \over 3\) and my numerator is 6.
 
 

What fraction am I? __________
 
 
c)
One of my equivalent fractions is \(1 \over 4\) and my numerator and denominator add together to make 20.
 
 

What fraction am I? __________