Предмет: Математика, автор: nebolsin02

в трех бидонах 80 литров молока. После того как из одного бидона отлили 8 литров, а из другого 12литров, в каждом из них оказалось молока в 2 раза меньше, чем в третьем бидоне. Сколько литров молока было в каждом бидоне первоначально?
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Ответы

Автор ответа: Alina43345445
0
(8+x)+(12+x)+2x=80 8+x+12+x+2x=80 20+4x=80 4x=60 x=15 проверка: 8+15=23 12+15=27 15*2=30 23+27+30=80 В первом бидоне было 23 литра молока, во втором 27 литров молока, в третьем 30 литров молока.
Интересные вопросы
Предмет: Английский язык, автор: dkravcuk8
Помогите пожалуйста, завтра нужно сдать этот тест.
1) Поставьте глаголы в предложениях в форму Past Simple:
1. I (lose) my watch in the park. 2. David (not hurt) his knee. 3. I kicked the ball and it (break) a window. 4. My new shoes (not cost) a lot of money. 5. I (get) this book from the library. 6. We had a garage where we (keep) our car. 7. Ali (cut) his knee? 8. The glass (fall) off the table. 9. The glass (not break). 10. We (sell) our old car. 11. We (buy) a new car. 12. The bell (not ring). 13. We all (go) into school. 14. The dog (catch) the ball.15. The man (not kneel) down. 16. Our cat (run) onto the road.?17. Jane (not write) a letter. 18. I (buy) a new camera last week. 19. We (drive) to a safari park yesterday.

2) Исправьте ошибки:
1. Did he went to school yesterday?
2. Did you to go home early?
3. You did learn English?
4. Did she works today?
5. What do you this yesterday?
6. Did they last night phone you?

3) Вставьте подходящий глагол в форме Past Simple.  (задание повышенной сложности)
be (2), feed, take, start, visit, listen
The children went to London. The Tour ________at Hyde Park in the morning. The children_______the ducks and squirrels there. Then they ________photos of Trafalgar Square. The next stop __________the British Museum.They also ___________ the Tower of London. The children _______to the famous bell Big Ben. In the evening they ________ very tired.

TEST – PAST SIMPLE

1) Поставьте глаголы в предложениях в форму Past Simple:
1. I (loose) my watch in the park. 2. David (not hurt) his knee. 3. I kicked the ball and it (break) a window. 4. My new shoes (not cost) a lot of money. 5. I (get) this book from the library. 6. We had a garage where we (keep) our car. 7. Ali (cut) his knee? 8. The glass (fall) off the table. 9. The glass (not break). 10. We (sell) our old car. 11. We (buy) a new car. 12. The bell (not ring). 13. We all (go) into school. 14. The dog (catch) the ball.15. The man (not kneel) down. 16. Our cat (run) onto the road.?17. Jane (not write) a letter. 18. I (buy) a new camera last week. 19. We (drive) to a safari park yesterday.

2) Исправьте ошибки:
1. Did he went to school yesterday?
2. Did you to go home early?
3. You did learn English?
4. Did she works today?
5. What do you this yesterday?
6. Did they last night phone you?

3) Вставьте подходящий глагол в форме Past Simple.  (задание повышенной сложности)
be (2), feed, take, start, visit, listen
The children went to London. The Tour ________at Hyde Park in the morning. The children_______the ducks and squirrels there. Then they ________photos of Trafalgar Square. The next stop __________the British Museum. They also ___________ the Tower of London. The children _______to the famous bell Big Ben. In the evening they ________ very tired.
Предмет: Английский язык, автор: kunzeksyngyraa