You know from the statement that on Monday he sells 2 pastries, so on Tuesday he sells 3, Wednesday 4, Thursday 5, Friday 6, Saturday 7 and Sunday 8 pastries.

So the average value is (2+3+4+5+6+7+8) pastries/7 days

The baker sells, on average, 35/7= <<35/7=5>>5 pastries/day for 1 week

# Answer

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<|im_start|>system
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<|im_start|>user
A baker sells pastries for $5 and works 7 days a week. On Monday he sold 2. Every day the number of sales increases by 1 compared to the previous day. On average, how many pastries does he sell on each day of the week?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
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user
5
A baker sells pastries for $5 and works 7 days a week. On Monday he sold 2. Every day the number of sales increases by 1 compared to the previous day. On average, how many pastries does he sell on each day of the week?
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