Final answer:
To find out how many days are needed to thaw a 10.85-pound turkey at a rate of one day per 4 pounds, divide the weight by 4 and round up to the nearest whole day, which results in 3 days.
Step-by-step explanation:
To calculate the number of days needed to thaw a 10.85-pound turkey, given the rule that it takes one day to thaw every 4 pounds of turkey, we can use simple division followed by rounding up, as partial days would still count as whole days in practice.
First, divide the weight of the turkey by the amount thawed per day:
10.85 pounds ÷ 4 pounds/day = 2.7125 days
Since you can't have a fraction of a day in practical terms, you would round up to the nearest whole day. Therefore, it would take 3 days to thaw a 10.85-pound turkey.