SOLUTION: The average number of hours of sleep per 24-hour period for shift workers at a business is as follows: Night Shift 3 5/7 Evening 9 1/2 Day Shift 6 1/2 Wat is the average n

Question 159510: The average number of hours of sleep per 24-hour period for shift workers at a business is as follows:
Night Shift 3 5/7
Evening 9 1/2
Day Shift 6 1/2
Wat is the average number of hours of sleep for these three types of workers? Express your answer as a mixed fraction.

_____hr.
I really need the concept on how to simply fractions.
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
Night Shift 3 5/7
Evening 9 1/2
Day Shift 6 1/2
(3 5/7 +9 1/2 + 6 1/2)/3
[(21+5)/7+(18+1)/2+(12+1)/2]/3
[26/7+19/2+13/2]/3
[(26+7*19+7*13)/14]/3
[(26+133+91)/14]/3
[(250)/14]*1/3
[(250*1)/42]
250/42=125/21 answer.

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