Micah can type 20 words per minute and Isaiah can type 40 words per minute. How many more words can Isaiah type than Micah in an hour? Let's be accurate as possible.
There are 60 minutes in an hour. Micah can type 20 x 60 = 1200 words in an hour. Isaiah can type 40 x 60 = 2400 words in an hour. Isaiah can type 2400 - 1200 = 1200 words more than Micah in an hour.
The answer: 1200.