Jill is the hairdresser for the school's dance team and has to braid 8 dancers' hair. If each dancer has five braids and each braid takes 30 seconds, how many minutes will it take to braid all the dancers' hair? Let's be accurate as possible.
First find the total number of braids among all the dancers: 8 dancers * 5 braids / dancer = 40 braids. Then multiply by that the time in seconds per braid to find the total time in seconds: 40 braids * 30 seconds / braid = 1200 seconds. Then divide the time in seconds by the number of seconds per minute to find the time in minutes: 1200 seconds / 60 seconds / minute = 20 minutes.
The answer: 20.