A race course is 400m long. A and B run a race and A wins by 5m. B and C run over the same course and B win by 4m. C and D run over it and D wins by 16m. If A and D run over it, then who would win and by how much? Choose the correct option: A) A, 8.4m B) D, 8.4m C) D, 7.2m D) A, 7.2m E) A, 9.2m
when A covers 400m   B covers 395 m   c covers 391mtrs   and D covers 407.29 mtrs   ANSWER:D, 7.2m
<result>C</result>
A race course is 400m long. A and B run a race and A wins by 5m. B and C run over the same course and B win by 4m. C and D run over it and D wins by 16m. If A and D run over it, then who would win and by how much?