LET'S PLAY ALGEBRA!
'(<a href="http://www.j-archive.com/media/2009-11-13_DJ_21.wmv">Kelly of the Clue Crew shows an animated diagram on the monitor.</a>)  If a racecar takes 5 seconds on a straightaway & 2 seconds to round a turn, it takes this long to complete 1 lap'
14 seconds