Question
Three girls, Yen, Linda and Jade had a total of 840 coins. Some exchanges were made. First, Yen gave Linda as many coins as Linda had. After that, Linda gave 13 of whatever she had then to Jade. Finally, Jade gave 13 of whatever she had to Yen. As a result, they each had the same number of coins. How many coins did Yen have at first?
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Three girls, Yen, Linda and Jade had a total of 840 coins. Some exchanges were made. First, Yen gave Linda as many coins as Linda had. After that, Linda gave 13 of whatever she had then to Jade. Finally, Jade gave 13 of whatever she had to Yen. As a result, they each had the same number of coins. How many coins did Yen have at first?