意思是一个货币市场上个月共结余48000，用它赚了360的利息，问以年单利计算每年利率是多少?。
A certain moneymarket account that had a balance of $48000 during all of last monthearned $360 in interest for the month. at what simple annual interestrate did the account earn interest last month?
意思是一个货币市场上个月共结余48000，用它赚了360的利息，问以年单利计算每年利率是多少?。
A certain moneymarket account that had a balance of $48000 during all of last monthearned $360 in interest for the month. at what simple annual interestrate did the account earn interest last month?
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