Question 1
Andy wants to save paper in printing documents. He does this by printing 8 pages into one sheet of paper as shown in the following configuration below:

He needs to print one document file, which contains 21 pages, to hand out to 40 persons so that each person gets a complete hard copy of the document. At least, how many sheets of paper will he need to accomplish this task?

He needs to print one document file, which contains 21 pages, to hand out to 40 persons so that each person gets a complete hard copy of the document. At least, how many sheets of paper will he need to accomplish this task?