Question
George had 3 coins and Justin had 16 coins. Their coins consisted of twenty-cent coins and fifty-cent coins. When all their fifty-cent coins were exchanged for twenty-cent coins, they had a total of 28 coins. How many twenty-cent coins did they have at first?
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George had 3 coins and Justin had 16 coins. Their coins consisted of twenty-cent coins and fifty-cent coins. When all their fifty-cent coins were exchanged for twenty-cent coins, they had a total of 28 coins. How many twenty-cent coins did they have at first?