78+96+40+104+77=395 395/5=79 79 pies sold per day on average.
Cornerstone Bakery sold an average of 79 pies per day this week. This was calculated by summing the pies sold from Monday to Friday and dividing by the number of days. The total number of pies sold was 395 and divided by 5 days equals 79 pies per day.
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