Вдвух бочках было одинаковое количество воды когда из одной бочки взяли одну четвертую а из другой 50 литров воды в бочках осталось поровну сколько литров воды было в двух бочках вместе

50-1/4
4/4= 50×4=200литров в 1 бочке
200×2= 400 литров в 2 бочках

1/4- 50л
4/4-50×4=200(в 1-ой)
200×2=400(в 2-ух)

1. The sun had rose before he woke up

2. Before he died, he had been very ill

3. I understood the problem as soon as he had explained it.

4. After she had written the letter, she went to the post office

5. When I drove to the airport, the plane had taken off

6. She had read the message carefully before she wrote a reply

7.  As soon as he had left the room, I turned on the radio

8. After he had had dinner, he went to the cinema

9. The man hadn't left till he recieved a definite answer

10. We didn't say a word until he had finished his story

11. When we reached the football ground, the game had started

12. Before John began to study architecture, he worked as a skilled builder

13. Harold couldn't leave for home till he had completed everything

14. After it had snowed heavily, the snow was very deep

Объяснение:

1. The sun had rose before he woke up

2. Before he died, he had been very ill

3. I understood the problem as soon as he had explained it.

4. After she had written the letter, she went to the post office

5. When I drove to the airport, the plane had taken off

6. She had read the message carefully before she wrote a reply

7.  As soon as he had left the room, I turned on the radio

8. After he had had dinner, he went to the cinema

9. The man hadn't left till he recieved a definite answer

10. We didn't say a word until he had finished his story

11. When we reached the football ground, the game had started

12. Before John began to study architecture, he worked as a skilled builder

13. Harold couldn't leave for home till he had completed everything

14. After it had snowed heavily, the snow was very deep

Объяснение: