title: Display time from number in excel number format
body: <p>I currently have a table with a set of dated columns, each row then has a persons name where under each date, a number denoting the number of minutes they have completed in training. i.e.  5 example rows for 1/10/2013 may be 30, 25, 60, 45, 15. I would like to be able to format that within HH:MM:SS but keeping the data its self the same so that the appropriate calculations can be done on the data.</p>
  
  <ol>
  <li>Is this possible using excel number formatting?</li>
  <li>if not, is this possible using anything other than VBA?</li>
  <li>if this is only possible using VBA, is it possible to convert HH:MM:SS back to MM only within a formula.</li>
  </ol>