Answer :
SOLUTION;
[tex]Annual\text{ }sales\text{ }cost=Starting\text{ }inventory+Production\text{ }cost-Final\text{ }Inventory\text{ }[/tex]Which is;
[tex]\begin{gathered} =430,000+230,000-150,000 \\ =510,000 \end{gathered}[/tex]Thus. the answer is 510,000