Calculate the Dollar Markup and Selling Price

Short Answer

Calculate the dollar markup and selling price.
$$\begin{array} { | c | c | c | c | } \hline \text { Cost } & \begin{array} { c } \% \text { of Markup } \\\text { on Cost }\end{array} & \begin{array} { c } \text { Dollar } \\\text { Markup }\end{array} & \text { Selling Price } \\\hline \$ 400 & 20 \% & \text { A } & \text { B } \\\hline\end{array}$$