Question
Yoko has twice as many coins as Pamela. After Pamela has bought another 57 coins, Pamela has twice as many coins as Yoko. How many coins does Pamela have at first?
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Yoko has twice as many coins as Pamela. After Pamela has bought another 57 coins, Pamela has twice as many coins as Yoko. How many coins does Pamela have at first?