SOLUTION: Education. The Mecklenberg County Public Schools stipulate that a standard school day will average at least 5 hr, excluding meal breaks. For the first four days of one school week

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Question 380338: Education. The Mecklenberg County Public Schools stipulate that a standard school day will average at least 5 hr, excluding meal breaks. For the first four days of one school week, bad weather resulted in school days of 4 hr, 6 hr, 3 hr, and 6 hr. How long must the Friday school day be in order to average at least 5 hr for the week?
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
For the average to be 5 hours, there need to be 25 hours throughout the five days (since 25/5 = 5). Since the first four days are 4, 6, 3, 6 hours their total is 19 hours, and Friday's school day must be 6 hours to make a total of 25.