Answer:
Frequency of p 
Frequency of p 
Number of individuals with homozygous dominant (AA) 
Number of individuals with heterozygous (Aa)
Number of individuals with homozygous recessive (aa) 
Explanation:
Out of 100 people, 10 have albino skin (aa)
So, the frequency of homozygous recessive individuals  is
 is 
Now, q will be
 
As per Hardy Weinberg's equation - 

Substituting the value of q in above equation, we get - 

Now the frequency of homozygous dominant (AA) will be 

Hence, out of 100 people  people are homozygous dominant (AA)
 people are homozygous dominant (AA)
Like wise out of 100 people  people are homozygous recessive (aa)
 people are homozygous recessive (aa)
As per As per Hardy Weinberg's equation- 

Substituting the values in above equation, we get - 

So, out of 100 people  people are heterozygous (Aa)
 people are heterozygous (Aa)