See the Following Separate Cases Required: Solve for the Missing Amounts (A,B,C,D,E,and F)

See the following separate cases. $$\begin{array} { l r r } & \text { Case \#1 } & \text { Case \#2 } \\\text { Sales } & \$ 1,000 & \$ 1,300 \\\text { Cost of goods manufactured } & \mathrm { A } & 500 \\\text { Finished goods inventory (beginning balance) } & 100 & \mathrm { D } \\\text { Finished goods inventory (ending balance) } & 150 & 200 \\\text { Cost of goods sold } & \mathrm { B } & 600 \\\text { Gross margin } & 300 & \mathrm { E } \\\text { Selling expenses } & \mathrm { C } & 75 \\\text { Administrative expenses } & 50 & 40 \\\text { Operating income } & 200 & \mathrm {~F}\end{array}$$ Required: Solve for the missing amounts (A,B,C,D,E,and F).