Giải : 

Đổi : 2 giờ 30 phút = 2,5 giờ

Vận tốc của ô tô đó là :

150 : 2,5 = 50  ( Km/giờ)

       Đáp số : 50 km/giờ

144000 đồng

Xem tiền vốn mỗi sản phẩm là 100% thì tiền bán sẽ là:

100% + 20% = 120% (tiền vốn)

Giá vốn mỗi sản phẩm là:

150 000 : 120 x 100 = 125 000 (đồng)

thể tích hình lập phương là

14 x 14 x 14 = 2744(cm³)

đs: V = 2744cm³

10 đúng nha các bn

4. 

Everyone dreams are beautiful, no matter how small or large, whether in money or money bags. Architecture and House Beautiful has contributed in no small merit to house more beautiful Vietnam added. For me, long time track House Beautiful Publications, learn, watch, taste changes constantly ... now I know I prefer the modern style, straight road in definition, the door wide high , colored lights. All in all overall non-standard and very simple, comfortable, but strange, beautiful and durable. Selected interior decoration design style of modern Asia, little furniture, just to meet daily needs, but each item must be charming and unique. I was very interested in the position of the stairs, it serves as a flexible life should be safe, bright, wide enough to walk, carry easy, rested legs, stairs should not flaunt picky. There are two seats previously less concerned Vietnam, now has other kitchen and bathroom. I love the spacious kitchen, decorating fun e nough for family gatherings over meals daily. Kitchen is a cozy place in your home. Where close family, expressing emotions with a favorite food, and children have the opportunity to learn to eat, learn to speak, learning packages, learn to open ... 

Also the bathroom is now not only to bathe that part much more. Shower as the old style: fast, compact, less expensive; bath tub is relaxing, takes time (and more money) but the shower feeling well. Each bathroom each different creative, bath seats in the house now in Vietnam did not lose any of the beautiful 5 star hotel. Home is much more room as bedrooms, living room, reserve, miscellaneous office storage ... The skill of the architect is to arrange appropriate space for all. Tables do not know how much detail is enough, each person has their own tastes, everyone is right, depending on personality. However, it is important to have enough money problems, things are more talented architect, reputable contractors for coordination of the three parties agreed to a new building is nice. That's labor force works, the mind of many workers. So, do not save that for sloppy construction and poor quality, the consequences will be repaired later.

There are things to consider, having been gifted architect will help you build a beautiful home genuine, and vice versa ... fix it forever. For me, the publication house numbers as a "channel" guide full of confidence!

3. Everyone has a dream of his, who are estimated to make pay the army, the Convention as a teacher, the Convention as a pilot. And I also have my dream. My dream is to become a writer.
When I tell people about this dream, many people believe that you're the romantic. A writer would have to have a romantic soul, said observers, emotional life, in harmony with everyone. From childhood I have read books by Nguyen Nhat Anh uncle, great uncle was writing, I was fascinated by how to write simple but affectionate of him.
Then I also want to become a writer, could be going to a lot of places, met many people, visited many places and can start writing. Perhaps when that emotion will very much and I will have work or. If you are a writer, then I'll become a celebrity, is well known, they will have their own books, can bring people come to show off your product.
Because being a writer dreams should from now you must read a lot, write a lot, then this could well be written. I admire writers, poets because they have a spiritual life is very rich. They beauty of life in these pages, and you also want to become like that.
I like freedom, like flying, so I do not like having to sit around. I think as a writer to go much, much new life with the good and meaningful work. I will try harder to be able to achieve his dream.
Whatever path you go there very long but I think if everyone has dreams, try and strive to know, they will surely do. I wanted to write the book about family, friendship, love, life. I will win donated three, gave my mother because they were always beside me, trying to motivate me to study well.
I will try to achieve that dream.

2. 

Dan is a young girl with a small frame with pale skin, smooth. Oval face with innocent eyes of a child, Dan always soften the hearts of many with just a glance. The berry red lips, mouth smile always fresh to reveal white teeth, seemed pearls. This girl has design flexible, gentle. The voice sounded very sweet and gentle. Thus in each of the singing competition, your presence was indispensable. Vocalist "homegrown" This has brought about the class, the school a lot of the first, second. Knitting class when it seems very gentle, easygoing but learning very seriously. The operation of the school, then you are always topped the class. However, Denmark is still regarded as the most necessary learning. With a head smart and fast calculation, so you are very good at math. Dan has always been my teachers and friends to study well liked by helpful friends. Home, outside school hours, Dan always made time to help their parents.

Hobbies reading, knitting has a somewhat bizarre hobby is like to watch Ghost. Every spare time is two to inquire about learning, fun confided sad story. Time that you have a cold, Dan has demonstrated his is indeed a good friend. I had to leave school every two weeks. However Denmark still to your house and teach you each problem, post office. This made me really makes me emotional. When my wife was sick at two walk together on the way to school. Print path happy memories, sad friends.

Dan has always been a good friend not only for me but for everybody. I'll try to do well for you two are best friends forever, sometimes you come forward.

1. The school children are learning in the classroom with tables and chairs arranged neatly, cabinets lovely school supplies. Above the blackboard is the slogan: "Emulation good teaching, good learning." So, we always adhere to the regulations of the school and listen to the teacher.

The school's students are studying many shade trees and benches in the school yard, the darling of me and I always go to school every day to get to school with my friends.

At recess, we were like birds colony collapse, rushed to the playground together the game flowing wire, polished worship under the trees in the yard. Like most is being picked flamboyant squeezed into play whenever page Summer.

My parents told me to go to school is good and follow the teacher commanded, and they do not litter to your school clean.

I loved school children are learning, I told myself to try to study well to please a teacher who has taught me so.