Question
Three girls, Winnie, Penelope and Jaslyn had a total of 1800 pens. Some exchanges were made. First, Winnie gave Penelope as many pens as Penelope had. After that, Penelope gave 15 of whatever she had then to Jaslyn. Finally, Jaslyn gave 13 of whatever she had to Winnie. As a result, they each had the same number of pens. How many pens did Winnie have at first?
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Three girls, Winnie, Penelope and Jaslyn had a total of 1800 pens. Some exchanges were made. First, Winnie gave Penelope as many pens as Penelope had. After that, Penelope gave 15 of whatever she had then to Jaslyn. Finally, Jaslyn gave 13 of whatever she had to Winnie. As a result, they each had the same number of pens. How many pens did Winnie have at first?