SOLUTION: Pete Malone worked 6 hours on Wednesday and 11 hours on Thursday. What are the possible numbers of hours he can work on Friday to average at least 8 hours per day for those three d

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Question 839235: Pete Malone worked 6 hours on Wednesday and 11 hours on Thursday. What are the possible numbers of hours he can work on Friday to average at least 8 hours per day for those three days?
Answer by alicealc(293) About Me  (Show Source):
You can put this solution on YOUR website!
Wednesday = 6 hours
Thursday = 11 hours
Friday = x hours
Average for those three days = 8 hours
(6 + 11 + x)/3 = 8
(17 + x) = 8 * 3
17 + x = 24
x = 24 - 17
x = 7
so, he works 7 hours on Friday.