60 процентов от 30 учеников в классе составляют девочки. Какую часть от числа девочек - №23969799

60 процентов от 30 учеников в классе составляют девочки. Какую часть от числа девочек составляет число мальчиков ?
- Предмет:
  Математика
- Автор:
  nguyen
- 5 лет назад

Ответы 1

30:100*60 = 18 - девочки30-18 =12 - мальчики
- Автор:
  vincentwseg
- 5 лет назад
- 0
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СРОЧНО!Помогите,пожалуйста, с тестом на грамматику.

1. Find the adjective:

A) Happiness B) health c) harmful D) help E) hesitate

2. Find a signal word for Past Simple:

A) Tomorrow B) ever C) now D) three days ago E) next week

3. Find a signal word for Present Perfect:

A) Usually B) Listen! C) yet D) always E) seldom

4. Choose the word with the fourth type of reading:

A) Burn B) Dress C) Tulip D) Fire E) Bar

5. Find a sentence in Present Progressive:

A) Last year we in France. B) Have you cleaned the floor? C) Are you from New Zealand?

D) I’m making a cheese cake right now. E) They are going to kook for a present.

6. Choose the right verb form:

A) we is playing B) we has playing C) we are playing D) we are plaing E) we was playing

7. Choose the right verb form:

A) He sung B) He singed C) He sungs D) He sang E) He sangs

8. Choose the correct variant:

A: What … in your spare time? B: I often go swimming

A) do you do B) are you doing C) have you done D) are you do E) does you do

9. Find the verb form in Present Perfect Progressive:

A) Has V3 B) Had V3 C) am, is, are +Ving D) Have/has been Ving E) Have/Has been V3

10. Choose the correct variant: There are 584 students at the department:

А) Five and hundred eighty-four. В) Five hundred and eighty-four. С) Five eighty-four hundred.

D) Five hundred eighty fourth. E) Five hundred and eighty four.

11. Choose the word to the definition: It is a person who doesn’t wear fur and leather clothes, and doesn’t eat diary products, meat and fish.

A) A meat-eater B) my Granny C) a child D) a vegetarian E) a sick person

12. Choose the correct variant: … you at school yesterday? – Yes, I …

А) Were/was В) Am/is С) Were/were D) Was/was Е)Was/were

13 Choose the correct variant: Listen! That boy … the saxophone.

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