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
Seven water stations were set up at equal intervals along the 42-kilometer route of a marathon, with the last water
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