Odell and Kershaw run for 30 minutes on a circular track. Odell runs clockwise at 250 m/min and uses the inner lane with a radius of 50 meters. Kershaw runs counterclockwise at 300 m/min and uses the outer lane with a radius of 60 meters, starting on the same radial line as Odell. How many times after the start do they pass each other?
<spanclass=′latex−bold′>(A)</span>29<spanclass=′latex−bold′>(B)</span>42<spanclass=′latex−bold′>(C)</span>45<spanclass=′latex−bold′>(D)</span>47<spanclass=′latex−bold′>(E)</span>50