Question
Three girls, Cindy, Wendy and Xylia had a total of 960 erasers. Some exchanges were made. First, Cindy gave Wendy as many erasers as Wendy had. After that, Wendy gave 13 of whatever she had then to Xylia. Finally, Xylia gave 13 of whatever she had to Cindy. As a result, they each had the same number of erasers. How many erasers did Cindy have at first?
5 m

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Three girls, Cindy, Wendy and Xylia had a total of 960 erasers. Some exchanges were made. First, Cindy gave Wendy as many erasers as Wendy had. After that, Wendy gave 13 of whatever she had then to Xylia. Finally, Xylia gave 13 of whatever she had to Cindy. As a result, they each had the same number of erasers. How many erasers did Cindy have at first?