Seven water stations were set up at equal intervals along the 42-kilometer route of a marathon, with the last water station at the finish point. If James maintained a uniform running speed throughout the marathon, did not turn back at any time and reached the finish line, in how much time did he run the marathon? [Note: Assume that the first station does not coincide with the starting point]

I. 40 minutes after the start of the marathon, James was 4 kilometers away from the second water station

II. 20 minutes before reaching the finish point, James was 20 kilometers away from the third water station


OA B

Source: e-GMAT