Final answer:
To change 166 days to weeks and days, divide the total number of days by 7. The result is 23 weeks and 5 days.
Step-by-step explanation:
To change 166 days to weeks and days, we need to divide the total number of days by 7, as there are 7 days in a week. 166 days ÷ 7 = 23 weeks and remainder 5 days. So, the correct answer is 23 weeks and 5 days.
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