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Five press releases for the spring sports meeting of grade one of primary school,
To the 100m athletes on the track, countless times standing on the white starting line, countless times looking forward, countless times tasting the bitterness of failure, countless times tasting the sweetness of victory. This is you? 100m athletes. Behind the glory is sweat, behind the success is hardship, for this short 100m, you have countless times of starting and rushing
Xiaojie went to the supermarket to buy 14 bottles of two brands of drinks, including 20 yuan for brand a and 10 yuan for brand B. if each bottle of Brand B drinks costs 0.5 yuan more than brand a, how much is the price of the two brands of drinks?
Suppose the price of brand a's beverage is x yuan, then the price of Brand B's beverage is (x + 0.5) yuan. According to the meaning of the question, 20x + 10x + 0.5 = 14, it is sorted out that 14x2-23x-10 = 0, the solution is X1 = - 514, X2 = 2, the test shows that X1 = - 514, X2 = 2 are the solutions of the original equation, but the negative number does not conform to the meaning of the question, so x = 2. Then x + 0.5 = 2.5. Answer: the price of brand a's beverage is 2 yuan, and that of brand B's beverage is 2.5 yuan
Xindu life supermarket in our city is going to buy 100 cases of a and B drinks at one time. The purchase price and selling price of each case of these two drinks are shown in the table below. Suppose x cases of a drinks are purchased, and all the two drinks can be sold, and the total profit is y yuan. The purchase price of brand a and B (yuan / case) is 6549, and the selling price (yuan / case) is 80 yuan 62 (1) find the functional relationship between Y and X; (2) due to the turnover of funds, the total cost of purchasing a and B drinks in supermarkets is not more than 5600 yuan, and the profit is not less than 1380 yuan. Considering the number of boxes of the two drinks, what kinds of purchase plans are there? (profit = selling price purchase price)
(1) According to the meaning of the question, the function relation between Y and X is: y = (80-65) x + (62-49) (100-x) = 2x + 1300, that is, y = 2x + 1300. (2) according to the meaning of the question, we get: 2x + 1300 ≥ 138065x + 49 (100 − x) ≤ 5600, solve the inequality, get 40 ≤ x ≤ 4334
RELATED INFORMATIONS
- 1. Xiaoxiao went to the supermarket to buy some drinks. She just paid 60 yuan, 4 yuan for coke and 3 yuan for mineral water
- 2. There are 270 students in the sixth grade of sunshine primary school, among which the number of girls is one third of that of boys. How many boys are there
- 3. There are 24 boys and 30 girls in class 6 (1)______ %There are more female students than male students______ %There are fewer boys than girls______ %
- 4. The number of boys in class 6 (1) is 25% more than that of girls, just five more. How many students are there in this class?
- 5. There were 300 students in Huimin primary school. The number of girls increased by 5% and that of boys by 4% this semester. The total number of students increased by 13. How many girls were there?
- 6. Give you 30 yuan, let you buy 1 yuan a bottle of mineral water (every 2 empty bottles can change 1 bottle of mineral water) ask you how many bottles of mineral water you can drink at most
- 7. Buoyancy of bottle Three bottles with the same density, material, shape and volume have vacuum, standard atmospheric pressure and high pressure (the same gas) inside. When they are thrown into the water, which one is more buoyant? The bottle does not deform
- 8. Uncle Zhang bought five small bottles of soda and a large bottle of orange juice in the supermarket, which cost 19.2 yuan in total?
- 9. Pet1 under mineral water bottle There's a pet under the bottle of mineral water. There's a 1 in it Some bottles have 5 in them
- 10. The weight of an empty bottle is 150g, the weight of water and bottle is 400g when it is filled with water, and the weight of water and bottle is 350g when it is filled with another liquid When an empty bottle weighs 150g, the weight of water and bottle is 400g, and when it is filled with another liquid, the weight of water and bottle is 350g, what is the bottle volume and liquid density?
- 11. Talk about some slogans of spring sports meeting in Grade 6 of primary school emergency
- 12. Among the 100 students in Grade 6, each of them likes sports, literature and science at least. There are 55 students who like sports, 56 students who like literature and art, 51 students who like science, and 15 students who love all three There are 4 in education and science, 17 in sports and literature and art. How many people only love science and art? (it's all afternoon)
- 13. The head teacher of a class in a school leads the students to travel. A travel agency says, "if the teacher buys a full ticket, the student ticket can be 50% off.", B travel agency said: "including teachers, all according to the full fare discount", assuming that the full fare of 240 yuan / piece (1) If there are X students, please write down the algebraic formula of the expenses of travel agencies a and B (2) If there are 10 students, which travel agency will you follow to save money (3) When there are many students, the cost of the two travel agencies is the same
- 14. Class five (1) is going to give 10 pencils to each of the students participating in the sports meeting as a souvenir, As a result, each of the students who came here sent 2 more, and there were 6 left. How many people actually came to the sports meeting? Let's calculate It's not 15. It's 12. It's a formula
- 15. At the weekend, Xiao Gang and Chen Ming bought a bottle of soda after playing table tennis. Xiao Gang sucked soda with a straw, while Chen Ming thought that the straw was too thin and too slow to enjoy. He directly sucked soda with his mouth at the mouth of the bottle. Did Chen Gang's "quick" method work? Why?
- 16. In order to recycle the old bottles, the beverage factory required 4 empty bottles to be replaced with a soda bottle In order to recycle the old bottles, the beverage factory stipulated that four empty bottles should be replaced with one bottle of soda water, including bottles. Xiaoming's mother bought one bottle first, and the next day asked Xiaoming to buy a box of 24 bottles. After drinking, she took the empty bottle to replace it with soda water, so how many bottles of drinks could he drink at most
- 17. A shop has a rule that after drinking soda, four empty soda bottles can be exchanged for one. Aunt Wang bought 24 bottles of soda. How many bottles of soda can she actually drink
- 18. Zhang Ying and Li Ni want to pack 1000 plum blossoms separately Zhang Ying and Li Ni want to pack 1000 plum blossoms separately. Zhang Ying takes 15 plum blossoms each time and Li Ni takes 9 plum blossoms each time. As a result, Li Ni packs one less bag than Zhang Ying, and the rest is not enough. How many plum blossoms are left? How many bags does Zhang Ying pack?
- 19. Zhang Ying, a saleswoman in a food store, and Li Ni want to pack 1000 plum blossoms separately. Zhang Ying takes 15 plum blossoms for each bag, and Li Ni takes 9 plum blossoms for each bag. As a result, Li Ni packs one less bag than Zhang Ying, and the rest is not enough. How many plum blossoms are left in the end? How many bags did Zhang Ying pack?
- 20. The school holds a sports meeting every autumn. In last year's sports meeting, you won the first place in the long jump; 2. Students usually do exercises in the morning, do eye exercises in the afternoon, and play basketball or football after class 3. Exercise is good for your health. You are ready to exercise