Предмет: Математика, автор: Евгения3828

Помогите решить задачу :
в олимпиаде по математике приняли участие 120 учащихся пятых и шестых классов .Пятиклассники состовляли 55% всех участников . Сколько пятиклассников учавствовали в олимпиаде ?

Ответы

Автор ответа: alenkakylemka

Участвовали-120 уч. пятых и шестых классов
Пятиклассников-55% всех участников
Решение:
120*0.55=66(уч)- пятиклассники
Ответ:66

Автор ответа: alenkakylemka

Мы находим часть от целого и поэтому умножение

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: География, автор: tulalupa577

РЕБЯТ СРОЧНО ПОМОЩЬ НУЖНА! ЗАВТРА СДАВАТЬ А Я НИЧЕ НЕ ПОНИМАЮ!!!
используя данные дневника наблюдения за погодой вычислите средние месячные температуры воздуха в вашей местности полученные данные оформите в виде таблицы после заполнения таблицы вычислите среднегодовую температуру воздуха

7 лет назад

Предмет: Английский язык, автор: rixxxy

Укажите время каждого предложения
1.With whom did you ( discuss) this question yesterday? 2. I (saw) this film this week. I like it very much. 3. When I ( entered) the kitchen, I ( saw) that my mother (was standing) at the table and ( cutting) some cabbage. She (was cooking) dinner. 4. As soon as I ( heard) a cry, I (ran) out of the room and (saw) that a child (was lying) on the ground and ( crying). "What ( happened)? Why are you ( crying)? Have you ( hurt) yourself?" I asked. 5. They (went) to the Hermitage last week. 6. They (have been) to the Hermitage twice this week. 7. Yesterday afternoon he ( came) home, ( had) dinner, (read) an article from the lat-est magazine and ( began) doing his homework. When did your friend ( return) from the South? — She ( returned) yesterday. — Did you ( go) to the Station to meet her? — No, I (was) too busy. Has your brother (returned) from the North? — Yes, he ( came) a few days ago. 10. Have you ( been) to the Crimea? When were you there? — I (was) there in 2005. 11. Where (is) your brother? — He has just ( come) home. He (is taking) a shower in the bathroom now. 12. As soon as I (saw) him, I ( understood) that he (was working) hard. He (was writing) something and (did not notice) anything. 13. When I ( came) home yesterday, the children (were running) and ( singing) merrily. "We (have learnt) a new song!" they cried. 14. When the young man entered) the room, she ( looked) at him in surprise. "What do you ( want) to tell me?" she ( said). "Why have you ( come)?" 15. It (was raining) hard when I ( left) home yesterday, so I ( returned), (to put) on my raincoat and (to) start again. 16. Are you ( working) right now? — Yes, I (am preparing) for the English exams. 17. Have a look! That (is) the Golden Gate Bridge on your left. — Oh, it (is) beautiful. I have just (taken) a picture of it. 18. Where did you ( learn) the news? 19. Have they already (thought) of everything? Have they (bought) a lot of food? — Yes, Mark has just ( ordered) ten bottles of Соке and four kinds of mineral water. He (mentioned) peanuts, but he (did not order) any. He (was thinking) of tea and fancy cakes. The shop (has charged) everything to Mark's credit card. 20. Why are you ( shivering)? — I (am shivering) because I (am) cold. 21. I (have sprained) my ankle again. 22. A world-famous Violinist (is playing) at tonight's concert. 23. The children (were playing) with their train set the whole evening yesterday.

7 лет назад

Предмет: Английский язык, автор: abilabdiss

Помогите пожалуйста по английскому языку

7 лет назад

Предмет: Математика, автор: BlackStarMafiaAlina

сколько натуральных чисел заключено между числами 12 1/7 и 21 6/7?

10 лет назад

Предмет: Математика, автор: YANA1003

Сроно!!! Помогите!!! Сравните [< > или=] а)563 *70 и 563*7;б)563*70 и 56,3*70 в)563*7 и 56,3*0,7;г)56,3*70 и 563*7

10 лет назад