Question 27
Bin and Bob each run 10 km around a circular 400 m track. They start together, run in the same direction and keep constant speeds. While Bin runs 20 m, Bob runs 17 m. How many times does Bin overtake Bob during the run?

Editorial clarification: Count overtakes while both runners are running, excluding their common start and meetings after stopping.

Editorial clarification: Count overtakes while both runners are running, excluding their common start and meetings after stopping.