Question
Three girls, Shiyun, Eva and Irene had a total of 1500 beads. Some exchanges were made. First, Shiyun gave Eva as many beads as Eva had. After that, Eva gave 13 of whatever she had then to Irene. Finally, Irene gave 15 of whatever she had to Shiyun. As a result, they each had the same number of beads. How many beads did Shiyun have at first?
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Three girls, Shiyun, Eva and Irene had a total of 1500 beads. Some exchanges were made. First, Shiyun gave Eva as many beads as Eva had. After that, Eva gave 13 of whatever she had then to Irene. Finally, Irene gave 15 of whatever she had to Shiyun. As a result, they each had the same number of beads. How many beads did Shiyun have at first?