Table 9-10 Shows the Output Per Week for Pens and }

$$\begin{array} { | l | c | c | } \hline & \text { Pens } & \text { Pencils } \\\hline \text { Tran } & 40 & 160 \\\hline \text { Farah } & 50 & 150 \\\hline\end{array}$$ Table 9-10 shows the output per week for pens and pencils by Tran and Farah.
-Refer to Table 9-10.Fill in the following table with the opportunity costs of producing bows and arrows for Tran and Farah.
$$\begin{array} { | l | l | l | } \hline & \text { Pens } & \text { Pencils } \\\hline \text { Tran } & & \\\hline \text { Farah } & & \\\hline\end{array}$$