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