Предмет: Математика, автор: aceremnyh493

в гараже было 340 автомобилей 3 марок. Число автомобилей Москвич составляет 45% от числа автомобилей ВАЗ, а число автомобилей ЗАЗ 5/9 от числа автомобилей Москвич .Сколько автомобилей каждой марке было в гараже

Ответы

Автор ответа: RRRsss

Пусть х машин марки "Жигули", 0,45х - марки "Москвич", 0,45х*5/9 = 0,25х - марки "Запорожец".Составим уравнение:х+0,45х+0,25х = 3401,7х = 340х = 340:1,7х = 200 (м.)- марки "Жигули".0,45*200= 90 (м.)- марки "Москвич".0,25*200 = 50 (м.)- марки "Запорожец".200+90+50 = 340Ответ: 200 машин марки"Жигули", 90 машин марки "Москвич" и 50 машин марки "Запорожец".

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- What role does sport play in your life?

- Although I do not go in for sports, I am fond of such activities that allow me to keep fit at home. I start with running, then I take exercise programmes.

- Do your friends go in for sports?

- Some of them go in for sports and sports activities such as swimming, skiing, playing badminton, ice hockey, football or basketball. Unfortunately, public sports facilities are not always available to my friends, and they are engaged into outdoor activities. Most of them prefer running.

- Do secondary schools officials pay attention to sports?

- A lot of schools use sports activities as a way of teaching social values. Among these are teamwork and sportsmanship. The average secondary school offers its pupils such sports as football, basketball, track-and-field.

- Do you often attend a swimming pool?

- I enjoy swimming that is why twice a week I go to the swimming pool in autumn, winter and spring. In summer I swim in the lakes and rivers.

- Is the healthy life-style popular in your country?

- Yes, certainly. Today everybody wants to be fit, feel good, look slim and stay young. Everyone who wants can participate in sports activities in our country. Many fitness clubs and public leisure centers have been built during the past years. These modern centers with their swimming pools, squash courts, gym and indoor courts for tennis are competing with cinemas and theatres as places for people to go to spend their leisure time.

- What do you know about sports in foreign countries?

- Nowadays sports and activities are fashionable in Europe and America. For example, popular marathons are now held everywhere. Lots of people want to see if they can run 42 kms and do it faster than everyone else. The big city marathons, in London and New York, are important sporting events. Television cameras and newspapers report them in detail. According to the latest figures the most popular sports in Europe and America are walking, cycling, jogging, playing football and golf. Other popular sports are bowling, badminton, and tennis. Experts are asking a very important question: should sports be taken seriously or should it be just for fun?

- What do you think about it?

- I think it depends upon the people's choice. Some people want to go in for sports seriously, others consider it to be a way to keep fit.

- What sports are British fond of?

- Sports play an important part in the life of the English people. All sports are very popular with them. The national British sports are: football, golf, cricket, table tennis, lawn tennis, snooker, steeplechase, racing, and darts. The British are fond of football which is of two kinds there: association football (soccer) and rugby. Englishmen like all kinds of racing. Horse-racing, motor-car racing, boat-racing, dog-racing, donkey-racing are very popular in England.

- What sports are popular in America?

- Such sports as hockey, soccer, weightlifting, track and field, tennis, rowing, wrestling, golf, basketball, volleyball, boxing, figure-skating, cross-country skiing, swimming, judo and shooting are popular in the USA. The variety and size of the country, its different climates and the people's love of competitions of any type can explain the large choice of sports in America. The most recent unusual sport that first reached popularity in the USA is triathlon. It includes swimming, bicycle racing and long-distance running and is becoming more and more popular in Europe

1) The interview is about:

A) People and sport

B) Football.

C) The Olympic Games.

D) Americans.

2) Choose the right sentence.

A) People can go in for sports only in gyms.

B) Weightlifting is not popular in America.

C) One can go swimming only in summer.

D) Some people go in for sports seriously.

3) Find the wrong statement.

A) In summer people can swim in lakes and rivers.

B) Sports aren't popular nowadays.

C) Englishmen like all kinds of racing.

D) Sports and activities have become more fashionable nowadays.

4) What sports (according to the text) are British fond of?

A) Cross-country skiing.

B) Rowing.

C) British are fond of different kinds of sport.

D) Track and field.

5) Choose the best title for the text.

A) What is dog-racing?

B) Sports are boring.

C) About sport.

D) Sports in America.

Дам 45 баллов только помогите как можно скорее