Hi! I'm trying to do something that is reverse-buffer esque. What I mean simply is buffer does "How many of thing X are within Y distance?" I.E. With a 1km buffer you have 3 schools. What I want is "How much distance X do you need to cover Y amount of things?" I.E. Somehow finding out the distance from a dairy to the closest 200 people is 127 metres. I've been stuck for hours. Any suggestions?