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P. 4413. Every morning two runners run along the running track of a stadium. If they run in the same direction 11 times more time elapses between the two moments when they meet then when they run in the opposite direction. (Their speeds are constant.) What is the ratio of the speeds of the two runners?

(3 points)

Deadline expired on 12 March 2012.

Google Translation (Sorry, the solution is published in Hungarian only.)

Megoldás. A futók sebességének aránya $\displaystyle 6:5$, vagyis 1,2.

Statistics on problem P. 4413.
 225 students sent a solution. 3 points: 211 students. 2 points: 8 students. 1 point: 6 students.

• Problems in Physics of KöMaL, February 2012

•  Támogatóink: Morgan Stanley