KöMaL 2008 K157
Street lamps in a village are placed at equal intervals along the road. I observed that during 1 minute I passed as many lamp posts as 1/12 of my speed in km/h. Given that I was moving at a uniform speed and I started and finished counting when I was midway between two posts, calculate the separation between lamp posts.
Official text KöMaL. Quoted with source.
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