Final answer:
To find out how many friends Kristin has, subtract the remaining ball from the total number she won, then divide by the number of balls per friend. Kristin has 29 friends.
Step-by-step explanation:
The question asks us to calculate how many friends Kristin has if she won 117 super bouncy balls, and after giving four balls to each friend, she has one remaining. To solve for the number of friends, we'll need to perform a division operation.
First, we subtract the one remaining ball from the total amount:
117 (total balls) - 1 (remaining ball) = 116 (balls given away)
Then, we divide the number of balls given away by the number of balls each friend received:
116 (balls given away) ÷ 4 (balls per friend) = 29 (number of friends)
So, Kristin has 29 friends.