You're gonna need to give a little more information to solve that problem, hun.
There are some equations that you can use.
[tex] ({p + q})^{2} = 1[/tex]
[tex] {p}^{2} + 2pq + {q}^{2} = 1[/tex]
(be sure you convert all % into decimals)
p= homozygous dominant frequency
q= homozygous recessive frequency
pq= heterozygous frequency
Hope that helps!