Sarah is having a slumber party with her 11 friends and they are telling scary stories. they divide into 3 groups and each group tells a story. each group member talks for 3 minutes. how many people are in each group?

So, when we're solving this problem, let's first look at the question: "How many people are in each group?  We can eliminate unnecessary information.  Does how long each person talk affect how many people are in each group?  Nope!  Does the kind of stories they are telling affect how many people are in each group?  No, again.  So all we need to know is the amount of people, and the amount of groups.

So, Sarah is at a party with 11 friends.  How many people are there in total, INCLUDING Sarah?  12!  Divide 12 people into 3 groups: 12/3=4.  So, there are 4 people in each group.

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