Later, the teaching assistant in van’s economics course gives him some advice. "based on past experience," the teaching assistant says, "working on 37.5 problems raises a student’s exam score by about the same amount as reading the textbook for 1 hour." for simplicity, assume students always cover the same number of pages during each hour they spend reading. given this information, in order to use his 4 hours of study time to get the best exam score possible, how many hours should he have spent working on problems, and how many should he have spent reading?