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【简答题】
某饮料厂开发了A、B两种新型饮料，主要原料均为甲和乙，每瓶饮料中甲、乙的含量如下表所示．现用甲原料和乙原料各2800克进行试生产，计划生产A、B两种饮料共100瓶．设生产A种饮料x瓶，解析下列问题： （1）有几种符合题意的生产方案写出解析过程； （2）如果A种饮料每瓶的成本为2.60元，B种饮料每瓶的成本为2.80元，这两种饮料成本总额为y元，请写出y与x之间的关系式，并说明x取使成本总额最低？
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