Question
Three girls, Yen, Roshel and Kylie had a total of 4500 cards. Some exchanges were made. First, Yen gave Roshel as many cards as Roshel had. After that, Roshel gave 13 of whatever she had then to Kylie. Finally, Kylie gave 15 of whatever she had to Yen. As a result, they each had the same number of cards. How many cards did Yen have at first?
5 m

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Three girls, Yen, Roshel and Kylie had a total of 4500 cards. Some exchanges were made. First, Yen gave Roshel as many cards as Roshel had. After that, Roshel gave 13 of whatever she had then to Kylie. Finally, Kylie gave 15 of whatever she had to Yen. As a result, they each had the same number of cards. How many cards did Yen have at first?