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It's a really difficult question.
Today, the teacher left us a math problem, which made me think a lot of time.
The topic is as follows: There are 5 fewer rooms on the first floor of a hotel than on the second floor, and there are 48 people in a tour group. If all the rooms are arranged to live on the first floor, 4 people per room, the rooms are not enough, and 5 people per room, some rooms are not enough.
If all the rooms are arranged to live on the second floor, 3 people per room, the room is not enough, and 4 people per room are not enough. How many rooms are there on the ground floor of this hostel?
As soon as I got this question, I thought to myself: Wow! This question is too simple, how can the teacher come up with such a simple question? I don't understand! However, the truth is not what I thought, I took the pen and calculated thousands of times, and at this time, I thought that the teacher would come to guide me!
Suddenly, a sentence from the same table reminded me: "According to the fact that if all the rooms are arranged to live on the first floor, and each room is occupied by 4 people, the rooms are not enough, and if each room is occupied by 5 people, some rooms do not meet this condition, and you can know the ......."The number of rooms on the first floor is less than 48 4 = 12 (rooms) and less than 48 5 = 9 (rooms). It dawned on me that I said to myself
That is, there are 10 or 11 rooms on the first floor. "There are not enough rooms; If there are 4 people per room, some rooms will not be able to live in it", it can be known that the number of rooms on the second floor is less than 48 3 = 16 (rooms) and more than 48 4 = 12 (rooms). The number of rooms on the second floor may be and 15.
At this time, my good friend Zhou Fan came over and said to me: "Because the guest rooms on the first floor are 5 fewer than the guest rooms on the second floor, if the number of rooms on the first floor is 11, then the number of guest rooms on the second floor should be 11 + 5 = 16 (rooms)." This is not in line with your previous analysis".
I took her and said, "If there are 10 rooms on the first floor, and the second floor should be 10 + 5 = 15 (rooms), then this is in line." ”
See, this problem has been overcome by me, and when we encounter this kind of problem in the future, we should pay attention to the scope of the problem.
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This kind of essay should be based on a narrative of life, and we will help you write useless.
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This kind of problem must be completed by yourself, otherwise it is useless.
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Is it okay to write any essay? 》
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Update 1:Can you talk about the opening point in detail? Hmm
I don't want to help you write the whole article. But can help point you. Wait until you can expand it yourself.
The beginning of the game can be written: In the articles and poems of many poets and scholars, it is not difficult to find sentences related to the benefit of opening the book;For example, there is a ** house in the book, and there is Yan Ruyu in the book, so I have to make good use of the summer vacation and read well. You can start by talking about how many books, newspapers, or magazines you would like to read during your summer vacation.
[e.g. literary works. Difficult essay collections, etc.] Keep up and talk about the next schedule. For example, 2 or 3 books in 1 week, etc.
Although the article is short, it leaves enough space for the reader to think and explore. [Provokes Petan's readers to think.] In addition, extracurricular reading broadens our horizons and enables us to explore the unpredictable and colorful worlds.
The benefits of reading are endless, such as improving language ability, broadening horizons, deepening knowledge and understanding of life, learning to appreciate life, literature, aesthetics and art, and transforming temperament. And here we will mainly focus on the help of reading to learn Chinese: through reading.
1.Raise interest in learning languages and help lay a good foundation for languages. 2.
Helps with vocabulary development, grammar and sentence structure and expression of thinking. 3.Enhance expression and description skills.
4.Broaden your horizons to inspire thinking and enhance your creative thinking. 5.
Improve your writing skills. 6.Learn to appreciate the works of Wenlu Zhongxingxue.
You can talk and you will open a book to excerpt low sentences. You can write a book reading report when you are buried together. Recommend books to those around you that you find interesting.
Promote the benefits of reading. The brocade sample should be enough for 350 words, hang-v-""
Reference: Me.
The beginning of the essay.
Usually the garden tour is the first.
To make the reader have a special feeling It is usually yahoo knowledge words and asks someone to help him compose.
I don't know the beginning of the essay Teacher's words are a topic for you.
More than half of you can copy for example: Write about the saddest thing that makes your mother the most You can start Have you ever tried to make your mother sad?I broke my mother's heart.
It's hard to forget. If it's a topic for you, I'll start it for you.
You should understand that you have your summer plansWhat would you do with your summer reading? Reading a book in an hour? No.
It's too long. How much does that cost? [This is your body] after the text.
It's the feeling. For example: I really enjoyed this summer vacation.
I have benefited a lot.
It seems that this summer has really not been in vain Remember: the composition is 3 paragraphs smaller.
Be sure to write about feelings in the last paragraph (because it will add points) Try to write more feelings'All of the above.
All of them are taught by the teacher during the lesson.
Reference: me
Composition is to be written to oneself.
On Saturday, I played CrossFire with Fei Yunwen and Ji Jiajie at my house. Let's start with rock-paper-scissors, pick a ghost, and the other two are good guys, with guns and knives. The game started, Fei Yunwen is a ghost, Chi Jiajie and I ran hard, but we couldn't get rid of Fei Yunwen, we were already running out of breath, but Fei Yunwen still chased after him.
I have a clear blue sky. This sky, when the storm comes, allows me to shelter from the rain in their arms; This sky encourages me to build faith in the face of setbacks; The sky reminds me to climb new heights when I am complacent about my success. This sky gives me courage, this sky gives me strength, and this sky is my mom and dad. >>>More
The footsteps of winter are gradually gone, and the cold mood of spring is still condensed on the edge of dreams. Looking back at the past, your eyes are the pearls in your memory, so heartbreaking, so heartbreaking, so surging. >>>More
Passing through the green belt next to the flower bed, I inadvertently saw a leaf, to be honest, the leaf is simply ordinary and can not be more ordinary, but it is because it is in a different place, it is at the intersection of the branches and leaves of the tree, it can be seen that this small tree has been pressed by people, coupled with the rain a few days ago, the branches of the small tree, injured, the leaves seem to fall, it does not seem to fall, the situation is very dangerous, but it survived on the branches with a persistent heart, strong perseverance, and the help of God. >>>More
Write the plot of the old boy into it.