Shading fractions of sets and shapes

This task is about finding fractions of sets and shapes.
a)
Shade \(1 \over 4\) of the set of counters.
 
 
 
b)
Shade \(2 \over 3\) of each of the three shapes below.
 
 
i) ii)
 
iii)
c)
Shade \(3 \over 5\) of the set of counters.
 
 
 
   
d)
Shade \(5 \over 8\) of the grid.