A race is 10 kilometers long. Markers will be placed at the beginning and end of the race course and at each 500 meter mark. How many markers are needed to ma

Question

how many markers are needed to mark the course for the race? 

Answer 1

So, a kilometer is 1000 meters. This means there are two per kilometer, since 500 is hslf of 1000.

 

10(2) = 20, but there's one at the very beginning, so 21 markers.