Ryder Net Profit Up 45 Percent  NEW YORK (Reuters) - Ryder System Inc. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=R.N target=/stocks/quickinfo/fullquote"&gt;R.N&lt;/A&gt; on Monday  posted a nearly 45 percent increase in quarterly net profit  amid increased demand for transport services, especially in its  commercial truck leasing business.