A store owner is trying to decide whether he should order equal amounts of four types of milk (skim, 1%, 2%, and whole). To help determine if certain kinds of milk are more popular, he records how many gallons of each kind of milk he sells over the course of a week. His data shows that he sold 31 gallons of skim, 23 gallons of 1%, 37 gallons of 2%, and 25 gallons of whole milk. Does the store sell equal amounts of the four kinds of milk