What we know: Jim wanted to type an average 20 pages a day. Jim typed slow the first day with only 10 pages. The next day he typed 30 to make up for it. He said, "I still typed an average 20 pages a day". But his mother told him he was wrong.
Enigma: Who was right? Jim or his mother?
Solution: Jim. Because 10 + 30 = 40 Divide that by 2 days and get 20 papers per day!
