Aand b are considering living alone or being roommates and splitting the rent for the next twelve months. a one bedroom, one bath apartment is $500 per month while a two bedroom, one bath apartment is $800. the one difficulty they have is that b snores very loudly. a estimates the cost of poor sleep due to b’s snoring at $150 per month. b could obtain a snore-eliminating device for $50 per month. if they share the surplus equally, a’s share of th