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MGSM / 罗瑞订购了 2 份潜水艇汉堡(每份 7.50 美元)、2 包薯条(每包 1.50 美元)和 2 份曲奇饼(每份 1.00 美元)的外卖。结账时需多付 20% 的…

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罗瑞订购了 2 份潜水艇汉堡(每份 7.50 美元)、2 包薯条(每包 1.50 美元)和 2 份曲奇饼(每份 1.00 美元)的外卖。结账时需多付 20% 的配送费,而且她想加上 5.00 美元的小费。她的这份外卖多少钱?

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