Question
Three girls, Tiffany, Pamela and Nicole had a total of 4920 coins. Some exchanges were made. First, Tiffany gave Pamela as many coins as Pamela had. After that, Pamela gave 15 of whatever she had then to Nicole. Finally, Nicole gave 15 of whatever she had to Tiffany. As a result, they each had the same number of coins. How many coins did Tiffany have at first?
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Three girls, Tiffany, Pamela and Nicole had a total of 4920 coins. Some exchanges were made. First, Tiffany gave Pamela as many coins as Pamela had. After that, Pamela gave 15 of whatever she had then to Nicole. Finally, Nicole gave 15 of whatever she had to Tiffany. As a result, they each had the same number of coins. How many coins did Tiffany have at first?