Give the step-by-step reasoning process and then the final answer. James prints out 2 books. They are each 600 pages long. He prints out double-sided and 4 pages per side. How many sheets of paper does he use?
He printed 600 * 2 = 1200 pages. Each sheet of paper was 4 * 2 = 8 pages. So he used 1200 / 8 = 150 sheets of paper.
The final answer: 150.