Question
Three girls, Dana, Joelle and Wendy had a total of 3840 stamps. Some exchanges were made. First, Dana gave Joelle as many stamps as Joelle had. After that, Joelle gave 15 of whatever she had then to Wendy. Finally, Wendy gave 13 of whatever she had to Dana. As a result, they each had the same number of stamps. How many stamps did Dana have at first?
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Three girls, Dana, Joelle and Wendy had a total of 3840 stamps. Some exchanges were made. First, Dana gave Joelle as many stamps as Joelle had. After that, Joelle gave 15 of whatever she had then to Wendy. Finally, Wendy gave 13 of whatever she had to Dana. As a result, they each had the same number of stamps. How many stamps did Dana have at first?