题干

某牛奶加工厂现有鲜奶8吨,若市场上直接销售鲜奶,每吨可获取利润500元;制成酸奶销售,每吨可获取利润1200元;制成奶片销售,每吨可获取利润2000元.该工厂的生产能力是:如制成酸奶每天可加工3吨;制成奶片每天可加工1吨.受人员制约,两种加工方式不可同时进行;受气温制约,这批牛奶必须在4天内全部销售或加工完毕.为此,该工厂设计了两种可行方案:

方案一:尽可能多的制成奶片,其余直接销售鲜牛奶;

方案二:将一部分制成奶片,其余制成酸奶销售,并恰好4天完成.

你认为选择哪种方案获利最多?为什么?

上一题 下一题 0.0难度 选择题 更新时间:2017-01-17 02:05:40

答案(点此获取答案解析)

解:方案一:最多生产4吨奶片,其余的鲜奶直接销售,

则其利润为:4×2000+(8﹣4)×500=10000(元);

方案二:设生产x天奶片,则生产(4﹣x)天酸奶,

根据题意得:x+3(4﹣x)=8,

解得:x=2,

2天生产酸奶加工的鲜奶是2×3=6吨,

则利润为:2×2000+2×3×1200=4000+7200=11200(元),

得到第二种方案可以多得1200元的利润

同类题1

任务型阅读,阅读下列短文,根据短中的信息完成文后表格。(每空一词)

    Have you ever been so worried about something that you have a headache or even can't sleep at night? Then you cannot pay enough attention during a test or in your study. If so, then you know that is stress. You are worried too much about something. The bad feeling in your mind can make you angry, sad, or scared, and can even give you a stomachache or a headache.

    However, some kind of stress is good. You might feel excited when you are called to give a speech at school. You feel nervous but excited. This kind of stress can help you to get things well done. And you may do a better job in your test if the stress pushes you to prepare more beforehand(提前).

    On the other hand, bad stress can last long if you are unable to come over your problems. You may not feel well, if your parents are having a quarrel, if a family member is badly ill, if you're doing poorly at school, or if anything else makes you unhappy. That kind of stress isn't going to help you. And it can actually let you do worse in your daily life.

    The best way to fight the stress is to have a balanced life. Make sure you get enough sleep and eat properly. Have some regular exercise. You should take some time for fun. Get advice from your parents, teachers and friends. Soon after that, you'll probably get away with your stress.

Title:  Face the ____

Meaning of stress

Stress is a feeling if you ____ too much about something that you cannot solve.

Possible effect

You may feel ____ in your mind and body.

Different

kinds

Good stress

•You might feel ____ when you speak in public.

•You will do the job well.

•It makes you ____ more  before doing an important job.

 ____ stress

Stress can last long if you are ____ to come over your problems. It can actually let you do ____  in your daily life.

How to keep stress away

Keep a ____ life in mind. They are sleep, ____ , exercise, time for fun and talk with others.