Предмет: Математика, автор: juliatiagai1991

7. Маринка збирала малину в решето — по 14 ягід за хвилину. Через 9 хв на кущі не зали- шилося жодної ягідки. За 6 хв її брат Микита з'їв усі ягідки. Скільки ягід за хвилину з’їдав Микита?

Ответы

Автор ответа: vauucm

Відповідь:

Давайте спочатку знайдемо загальну кількість малини, яку було зібрано Маринкою за 9 хвилин. Вона збирала малину зі швидкістю 14 ягід за хвилину протягом 9 хвилин:

14 ягід/хв * 9 хв = 126 ягід.

Отже, Маринка зібрала 126 ягід.

Після цього брат Микита з'їв всю малину за 6 хвилин. Щоб знайти швидкість, з якою він їв малину (кількість ягід за хвилину), поділімо загальну кількість зібраної малини на час, протягом якого він її з'їв:

126 ягід / 6 хв = 21 ягіда/хв.

Отже, Микита з'їв малину зі швидкістю 21 ягіда за хвилину.

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: akkalzhan01

1 OKET Read this postcard and make notes to answer the questions. Hi, Helena! How are you? hope you're enjoying the summer holiday! What's the weather like in Moscow? We're here in Kazakhstan, in Almaty! It's fantastic! Yesterday, we went to the Ile-Alatau National Park. We hiked across the woodlands and meadows, and we could see the Tian Shan mountain range! It was breathtaking! (You can see a picture of the highest peak in Kazakhstan - Pik Talgar - on the front of the postcard.) This morning, we're going to the Charyn Canyon, which is about 3 hours drive from the city. It's very, very long! That'll be fun! Then this afternoon, we're going shopping. I'll buy you a present! 3 We're leaving Almaty tomorrow morning. We're going to Astana for two days. Maybe I'll see the President! We eget back on Friday. I'll call you as soon as I get homei Bye for now! Lots of love, Natalie 1 Who wrote the postcard?. 2 Who is she sending the postcard to?. 3 Where is Natalie now?. 4 Where did she go yesterday?. 5 What's she doing this afternoon?. USA FIRST-CLA AMANIDES Helena Little Lukov pereulok 10 flat 5 Moscow 107045 Russia 6 What will she buy?. 7 When is she leaving Almaty?. 8 Where is she going next?. 9 How long will she stay there?. 10 When does she get home?

1 год назад

Предмет: Английский язык, автор: luffy07072008

1 Read the strategy above. Then read the paragraph below
and headings A-D. Choose the heading which best
matches the paragraph.
The older generation seem to have chosen to forget so much
about their past. It is obvious to a teenager that their parents
must have made some mistakes in their youth, disagreed with
their parents, listened to the 'wrong' music, or made the 'wrong'
friends. But it is rare to find a parent who admits to it.
A Parents expect too much perfection from teens.
B Teens are unable to see a parent's point of view.
C Parents frustrate teens by denying their past.
D Teens should admit their mistakes to their parents.

1 год назад

Предмет: Физика, автор: olesha99901