К 400 г 30% -ного сахарного сиропа добавили 200 г воды. какова концентрация полученого раствора

К 400 г 30% -ного сахарного сиропа добавили 200 г воды. какова концентрация полученого раствора
- Предмет:
  Математика
- Автор:
  vega
- 5 лет назад

Ответы 2

Ответ:
20%
Пошаговое объяснение:
400*0,3/(400+200)=0,2
- Автор:
  bishopcoleman
- 5 лет назад
- 0
Пошаговое объяснение:
1) 400*30/100= 120 (г)- растворенного вещества находится в 400 г раствора.
2) 400+200= 600 (г)-количество раствора после добавления воды.
3) (120/600)*100% = 20%
Ответ: 20 %.
( есть доказательства)))
- Автор:
  melendez
- 5 лет назад
- 0
Добавить свой ответ

Еще вопросы

докладний переказ будуть нові ліси публіцистичний стиль
- Предмет:
  Українська література
- Автор:
  banjocook
- 5 лет назад
- Ответов:
  
  1
- Смотреть
Переведите предложения в косвенную речь....
1)"I like play tennis"
2)"We are having dinner"
3)"I have lost my watch"
4)"Are you going out? "
5)"I Will buy the car"
- Предмет:
  Английский язык
- Автор:
  lukeaskp
- 5 лет назад
- Ответов:
  
  2
- Смотреть
Решите СРОЧНО пожалуйста задание 1 (пункты 1,2,3). Буду ооочень благодарна
- Предмет:
  Физика
- Автор:
  ladyhd8j
- 5 лет назад
- Ответов:
  
  1
- Смотреть
ПОМОГИТЕ ПОЖАЛУЙСТА С АНГЛИЙСКИМ. УМОЛЯЮ 1. Her hobby is
chemistry.
a) A
b) an
c) -
d) the
2. Liz is a good girl. She - her room at the weekends.
a) is always tidying b) always tidied c) always tidies d) had always tidied
3. By September 1
- English for five years.
a) a) will study b) am going to study c) will have studied d) will have been studying
4. Could you when the London train arrives?
a) say me b) tell
c) say to me
d) tell me
5. Bob is _swimmer than his brother.
a) the worst b ) as bad
c) a worse
d) worser
6. At this time tomorrow !
on the beach.
a) will sunbathe b) will be sunbathing c) am sunbathing d) was sunbathing
7. She watch ed the boys
tennis. The game was exciting.
a) to play
b) play
c) playing
d) played
8. By the time I came, my car
a) repaired
b) had repaired
c) had been repaired d) was being repaired
9. We are old friends. We
_ each other since we were children.
a) knew
b) have known c ) have been knowing d) know
10.
looking for a dangerous gang at the moment.
a) A police is
b) The police is
c) The police are d) Police are
11. I am not sure if I _ _this swimming suit.
a) will buy
b) buy
c) would buy
d) am buying
12. He decided to save some money and put _ in the bank.
a) it
b) them
c) their
d) its
13. Look out! The stone
fall down.
a) is going to
b) will
c) should
d) would
14. The company
to find new specialists for months.
a) have tried
b) has been trying c) had tried
d) was trying
15. Ann broke her leg. her summer holidays and had to spend several days I hospital.
a) during
b) until
c) while
d) by
- Предмет:
  Английский язык
- Автор:
  haley49
- 5 лет назад
- Ответов:
  
  3
- Смотреть

К 400 г 30% -ного сахарного сиропа добавили 200 г воды. какова концентрация полученого раствора​

Ответы 2

Топ пользователей

К 400 г 30% -ного сахарного сиропа добавили 200 г воды. какова концентрация полученого раствора