Question
Three girls, Erika, Abi and Jaslyn had a total of 5040 cards. Some exchanges were made. First, Erika gave Abi as many cards as Abi had. After that, Abi gave 13 of whatever she had then to Jaslyn. Finally, Jaslyn gave 15 of whatever she had to Erika. As a result, they each had the same number of cards. How many cards did Erika have at first?
5 m

Click button first when a symbol is required. X

Three girls, Erika, Abi and Jaslyn had a total of 5040 cards. Some exchanges were made. First, Erika gave Abi as many cards as Abi had. After that, Abi gave 13 of whatever she had then to Jaslyn. Finally, Jaslyn gave 15 of whatever she had to Erika. As a result, they each had the same number of cards. How many cards did Erika have at first?