Two men set out at the same time to walk towards each other from M and N, 72 miles apart. The first man walks at the rate of 4 mph. The second man walks 2 miles the first hour, 221 miles the second hour, 3 miles the third hour, and so on in arithmetic progression. Then the men will meet:
<spanclass=′latex−bold′>(A)</span>in 7 hours<spanclass=′latex−bold′>(B)</span>in 841 hours<spanclass=′latex−bold′>(C)</span>nearer M than N<spanclass=′latex−bold′>(D)</span>nearer N than M<spanclass=′latex−bold′>(E)</span>midway between M and N