第8届希望杯全国数学邀请赛六年级(特)第一试 1.以每3盘16元的价格购进一批录像带,又以每4盘12元购进比前一批多1倍的录像带,最后以每3盘K元全部售出,收益20%.这里,k=( )元.2.如图是一个
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![第8届希望杯全国数学邀请赛六年级(特)第一试 1.以每3盘16元的价格购进一批录像带,又以每4盘12元购进比前一批多1倍的录像带,最后以每3盘K元全部售出,收益20%.这里,k=( )元.2.如图是一个](/uploads/image/z/9872383-31-3.jpg?t=%E7%AC%AC8%E5%B1%8A%E5%B8%8C%E6%9C%9B%E6%9D%AF%E5%85%A8%E5%9B%BD%E6%95%B0%E5%AD%A6%E9%82%80%E8%AF%B7%E8%B5%9B%E5%85%AD%E5%B9%B4%E7%BA%A7%EF%BC%88%E7%89%B9%EF%BC%89%E7%AC%AC%E4%B8%80%E8%AF%95+1.%E4%BB%A5%E6%AF%8F3%E7%9B%9816%E5%85%83%E7%9A%84%E4%BB%B7%E6%A0%BC%E8%B4%AD%E8%BF%9B%E4%B8%80%E6%89%B9%E5%BD%95%E5%83%8F%E5%B8%A6%2C%E5%8F%88%E4%BB%A5%E6%AF%8F4%E7%9B%9812%E5%85%83%E8%B4%AD%E8%BF%9B%E6%AF%94%E5%89%8D%E4%B8%80%E6%89%B9%E5%A4%9A1%E5%80%8D%E7%9A%84%E5%BD%95%E5%83%8F%E5%B8%A6%2C%E6%9C%80%E5%90%8E%E4%BB%A5%E6%AF%8F3%E7%9B%98K%E5%85%83%E5%85%A8%E9%83%A8%E5%94%AE%E5%87%BA%2C%E6%94%B6%E7%9B%8A20%25.%E8%BF%99%E9%87%8C%2Ck%3D%EF%BC%88+%EF%BC%89%E5%85%83.2.%E5%A6%82%E5%9B%BE%E6%98%AF%E4%B8%80%E4%B8%AA)
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