Va2 =speed puck A after collision

Vb2 = speed puck B after collision

So far my work is:

Since the momentum is conserved for both components I did this.

Va2 = (40-Vb2*(cos(45) )/cos(30)

Vb2 = (-Va2*sin(30) )/sin(45)

Okey. I have 2 unknowns I need to find and 2 equations.

When I compute these 2 I don't get the right answer.

The right answer is Va2=29.3 and Vb2=20.7

Could someone please give me a hint to what I'm doing wrong.