某超市销售A,B两款保温杯,已知B款保温杯的销售单价比A款保温杯多10元,用480元购买B款保温杯的数量与用360元购买A款保温杯的数量相同.
(1)A,B两款保温杯的销售单价各是多少元?
(2)由于需求量大,A,B两款保温杯很快售完,该超市计划再次购进这两款保温杯共120个,且A款保温杯的数量不少于B保温杯的2倍,A保温杯的售价不变,B款保温杯的销售单价降低10%,两款保温杯的进价每个均为20元,应如何进货才能使这批保温杯的销售利润最大,最大利润是多少元?
【答案】(1)A款保温杯的售价为30元,B款保温杯的售价为40元;(2)进货80个A款保温杯,40个B款保温杯,利润最大,为1440元.
【解析】
【分析】
(1)设:A款保温杯的售价为x元,B款保温杯的售价为(x+10)元;利用数量相等列方程求解即可;(2)设进货A款保温杯m个,B款保温杯(120-m)个,总利润为w,根据题意得出函数关系式,同时列出不等式组得到m的范围,再利用一次函数的性质得到答案.
Her stomach was too big and she couldn't come ______ the bottle.
Aha there is ________ milk in it.
完形填空
One day a little mouse was thirsty. She looked everywhere for water to drink. She climbed up onto a table. And she saw a bottle on the table. The mouth of the bottle was 16 The little mouse looked inside the bottle. "Aha there is 17 milk in it. That's great!" She went into it and began to drink.She drank and drank. After a moment she had drunk enough. Her stomach was too big and she couldn't come 18 the bottle. She cried for help. Just then a cat camp up to the table. When the cat 19 the cry he jumped onto the table so 20 ,and said, "You'll be my nice lunch!" The little mouse was very clever and she 21 for a moment and said. "Brother Cat, you mustn't roll the bottle." " 22 ?" asked the cat. "I would get dizzy (头晕目眩的)", said the mouse. The cat said that he would let her 23 soon. So he began to roll the bottle. Suddenly the bottle fell down onto the floor and broke into 24 The little mouse ran 25 as fast as she could. When the cat jumped off the table and ran after her, the mouse had already gone into her home.
The mouth of the bottle was ________ The little mouse looked inside the bottle. "
David ________ you please sweep the floor and take out the trash?
—Would you please tell me ________?
—It's Mr. Black's.
The ________ we do for other people, the ________ we will be.
— All of my classmates have passed the PE test.
— ________ exciting the news is!
Mum likes ________ soap operas. Let's buy a TV for her.
—I'm afraid his radio is too noisy. Will you please ________ him to ________ a little.
—Sure.
The story is ________ interesting ________ everybody likes it very much.