Question
Three girls, Pamela, Cathy and Barbara had a total of 1920 stickers. Some exchanges were made. First, Pamela gave Cathy as many stickers as Cathy had. After that, Cathy gave 13 of whatever she had then to Barbara. Finally, Barbara gave 15 of whatever she had to Pamela. As a result, they each had the same number of stickers. How many stickers did Pamela have at first?
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Three girls, Pamela, Cathy and Barbara had a total of 1920 stickers. Some exchanges were made. First, Pamela gave Cathy as many stickers as Cathy had. After that, Cathy gave 13 of whatever she had then to Barbara. Finally, Barbara gave 15 of whatever she had to Pamela. As a result, they each had the same number of stickers. How many stickers did Pamela have at first?