Question
Three girls, Shannon, Eva and Pamela had a total of 1200 erasers. Some exchanges were made. First, Shannon gave Eva as many erasers as Eva had. After that, Eva gave 15 of whatever she had then to Pamela. Finally, Pamela gave 15 of whatever she had to Shannon. As a result, they each had the same number of erasers. How many erasers did Shannon have at first?
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Three girls, Shannon, Eva and Pamela had a total of 1200 erasers. Some exchanges were made. First, Shannon gave Eva as many erasers as Eva had. After that, Eva gave 15 of whatever she had then to Pamela. Finally, Pamela gave 15 of whatever she had to Shannon. As a result, they each had the same number of erasers. How many erasers did Shannon have at first?