Final answer:
The club's size decreased by a total of 27 members over 3 weeks. By dividing 27 by 3, we find that the size changed by 9 members each week.
Step-by-step explanation:
The question asks about a private club which lost 27 members over the course of 3 weeks, with an equal number of members leaving each week. To find the change in the club's size each week, we divide the total number of members who left by the number of weeks. This calculation is done by taking the total decrease in members, which is 27, and dividing it by the 3 weeks.
Identify the total decrease in members: 27.
Identify the total number of weeks: 3.
Divide the total decrease in members by the number of weeks: 27 members ÷ 3 weeks = 9 members per week.
Therefore, the club's size changed by 9 members each week.
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