甲、乙两个数的平均数是18.甲乙两个数的比是4:5,那么甲数和已数是?
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![甲、乙两个数的平均数是18.甲乙两个数的比是4:5,那么甲数和已数是?](/uploads/image/z/2109563-35-3.jpg?t=%E7%94%B2%E3%80%81%E4%B9%99%E4%B8%A4%E4%B8%AA%E6%95%B0%E7%9A%84%E5%B9%B3%E5%9D%87%E6%95%B0%E6%98%AF18.%E7%94%B2%E4%B9%99%E4%B8%A4%E4%B8%AA%E6%95%B0%E7%9A%84%E6%AF%94%E6%98%AF4%3A5%2C%E9%82%A3%E4%B9%88%E7%94%B2%E6%95%B0%E5%92%8C%E5%B7%B2%E6%95%B0%E6%98%AF%3F)
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