Question
Three girls, Nora, Winnie and Nicole had a total of 2220 coins. Some exchanges were made. First, Nora gave Winnie as many coins as Winnie had. After that, Winnie gave 13 of whatever she had then to Nicole. Finally, Nicole gave 15 of whatever she had to Nora. As a result, they each had the same number of coins. How many coins did Nora have at first?
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Three girls, Nora, Winnie and Nicole had a total of 2220 coins. Some exchanges were made. First, Nora gave Winnie as many coins as Winnie had. After that, Winnie gave 13 of whatever she had then to Nicole. Finally, Nicole gave 15 of whatever she had to Nora. As a result, they each had the same number of coins. How many coins did Nora have at first?