Question
Yoko and Erika have some coins. If Yoko gives 11 coins to Erika, Erika will have 4 times the number of coins as Yoko. If Erika gives 16 coins to Yoko, Yoko will have 25 as many coins as Erika. How many coins does Yoko have at first?
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Yoko and Erika have some coins. If Yoko gives 11 coins to Erika, Erika will have 4 times the number of coins as Yoko. If Erika gives 16 coins to Yoko, Yoko will have 25 as many coins as Erika. How many coins does Yoko have at first?