math
posted by elliot on .
During Bill's threehour meeting, the word global was used, on average, once every five minutes during the first two hours. If the word global was used 54 times throughout the meeting, then what was the average number of minutes between uses in the third hour?

There are 180 minutes in 3 hours and 120 minutes in two hours.
120 / 5 = 24
The word global was used 24 times in the first two hours.
So, in the third hour, the word was used 30 times.
60 / 30 = 2, which is the answer.