Jason bought a new bookcase that can hold a maximum of 80 pounds of weight. Jason has 70 hardcover books that each weigh half a pound, 30 textbooks that each weigh 2 pounds, and 3 knick-knacks that each weight 6 pounds. How many pounds over the bookcase's weight limit is this total collection of items? Give me reasons, before answering the question
First find the total weight of the hardcover books: 70 books * .5 pound / book = 35 pounds. Then find the total weight of the textbooks: 30 books * 2 pounds / book = 60 pounds. Then find the total weight of the knick - knacks: 3 knick - knacks * 6 pounds / knick - knack = 18 pounds. Then find the total weight of all the items: 35 pounds + 60 pounds + 18 pounds = 113 pounds. Then subtract the bookcase's weight limit: 113 pounds - 80 pounds = 33 pounds. So the final answer is 33.