LaTeX Forum

\documentclass[DIV=12]{scrartcl}
\usepackage[T1]{fontenc}
\usepackage{mathtools} % lädt »amsmath«

\newlength{\linelength}
\setlength{\linelength}{\widthof{maximum aluminum windows Linda can produce in one day}}

\begin{document}
  \addsec{DATA}
    \begin{align*}
      A_j &= \text{\parbox[tt]{\linelength}{profit of windows $j$}} \\
      B_j &= \text{\parbox[tt]{\linelength}{square feet of windows $j$}} \\
      C &= \text{\parbox[tt]{\linelength}{maximum square feet Bob can produce in one day}} \\
      D &= \text{\parbox[tt]{\linelength}{maximum wooden windows Doug can produce in one day}} \\
      E &= \text{\parbox[tt]{\linelength}{maximum aluminum windows Linda can produce in one day}}
    \end{align*}
  \addsec{Decision}
    \begin{align*}
      x_j & =  \text{\parbox[tt]{\linelength}{amount of windows produced of kind $j$}}
  \end{align*}
\end{document}

\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{align*}
  \intertext{DATA}
    A_j & = \text{profit of windows $j$}\\ 
    B_j & = \text{square feet of windows $j$}\\
    C & =  \text{maximum square feet Bob can produce in one day}\\
    D & =  \text{maximum wooden windows Doug can produce in one day}\\
    E & =  \text{maximum aluminum windows Linda can produce in one day} 
  \intertext{Decision}
    x_j & =  \text{amount of windows produced of kind $j$}
\end{align*}
\end{document}

\begin{document}
\section*{DATA}
\begin{align*}
	A_j & = & profit\ of\ windows\ j  \\ 
	B_j & = & square\ feet\ of\ windows\ j\\ 
	C & = & maximum\ square\ feet\ Bob\ can\ produce\ in\ one\ day\\
	D & = & maximum\ wooden\ windows\ Doug\ can\ produce\ in\ one\ day\\
	E & = & maximum\ aluminum\ windows\ Linda\ can\ produce\ in\ one\ day\
\end{align*}
\section*{Decision}
\begin{align*}
	x_j & = & amount\ of\ windows\ produced\ of\ kind\ j 
\end{align*}
\end{document}