A ratio \(a : b\) means the first quantity is \(\frac{a}{b}\) of the second.<br><br>
&bull; Eugene : Willie = \(10 : 9\)<br>
&bull; Eugene&rsquo;s height = \(\frac{10}{9}\) of Willie&rsquo;s height<br><br>
Final Answer: A = 10, B = 9