MathNet 2006 — Part 03 Question 18

An athlete runs $5000~\mathrm{m}$ per week on a sports court, which has a short track and a long track. In one week he trained six days, each day running once on the long track and twice on the short track. The following week he trained seven days, each day running once on each track. We can then say that:

A) the long track is three times longer than the short one.

B) the long track is four times longer than the short one.

C) the long track is five times longer than the short one.

D) the long track is $600~\mathrm{m}$ longer than the short one.

E) the long track is $500~\mathrm{m}$ longer than the short one.