You would divide 5 seconds by 60 seconds since there is 60 seconds in a minute and get 12. Then you would times 12 by 100 and get 1200. Kylie swung 12 times a minute. Then you would divide by 60 to get the swings in minutes. So it would take 20 minutes.
60/5 = 12
12 x 100 = 1200
1200/60 = 20
