Question 467959
The answer is found by a simple method.  First you must find out how many seconds are in an hour.  So one hour is 60 minutes and one minute is 60 seconds.  So 60*60 is 3600 seconds per hour.  In the question you are given the about for 10 seconds. So you take 3600 seconds/ 10 seconds and get 360.  You now know how many 10 seconds are in 1 hours so you then take 360*550 to get you answer which is 198,000 feet per hour.