How does a copy machine work?

Answer 1

See this 'How Stuff Works' article for how copiers used to work in the 1980s (xerography).

Wikipedia says that nowadays, they are all-digital, just a combination of a document scanner and a laser printer, so that they can do loads of advanced functions.

Answer 2

There are 60 seconds in a minute. each 2d, the replica gadget makes 40 4/60 of a replica. to verify how long it takes to make 242 copies, we divide 242 with the help of (40 4/60) copies in line with 2d. 242 divided with the help of (40 4 / 60) = 330. It takes the replica gadget 330 seconds, or 5 minutes and a nil.5.