Question
Oliver has 7 coins in his purse. They are either fifty-cent coins or twenty-cent coins. What is the biggest possible amount of money in his purse when he has one or more twenty-cent coins? Express your answer in dollars.
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Oliver has 7 coins in his purse. They are either fifty-cent coins or twenty-cent coins. What is the biggest possible amount of money in his purse when he has one or more twenty-cent coins? Express your answer in dollars.