Well, a mile equals 1760 yards. half of that would be 880 yards. That would mean that Desiree lives eight yards closer to school, which I got by this: 880-872=8
t = time out + time back 11 = d/523 + d/415 find common deneminator 11 = (415d + 523d)/(523*415) 11*523*415 = 415d + 523d 2387495 = 938d d = 2545 miles
