Evelyn’s family watched 10 hours of television last week. The week before, they watched 8 hours of television. If they watch 12 hours of television next week, what is the average number of hours of television that they watch per week?
Over the three weeks, they will have watched a total of 10 + 8 + 12 = <<10+8+12=30>>30 hours of television.
The average number of hours per week is 30 hours / 3 = <<30/3=10>>10 hours of television.
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