Your company intends to pay 85% of your coverage.
For coverage of $200, your company will pay the following amount:
[tex]\begin{gathered} \frac{85}{100}\times200 \\ =170 \end{gathered}[/tex]Therefore, your share of the cost will be the remaining amount from the total coverage. Hence
[tex]\begin{gathered} 200-170 \\ =30 \end{gathered}[/tex]In that case, your share of the cost will be $30.