<p>Here is the question. "A four-digit integer, WXYZ, in which W, X, Y, and Z each represent a different digit, is formed according to the following rules. </p>
<ol>
<li><p>X = W + Y + Z.</p></li>
<li><p>W = Y + 1</p></li>
<li><p>Z + W - 5</p></li>
</ol>
<p>What is the four-digit integer?" </p>
<p>This is a student response problem.</p>