Предмет: Математика, автор: asatryanalina8

Задача. Моторний човен проплив 93,36 км за течією річки та 152,65 км проти течії. Скільки часу витратив човен на весь шлях, якщо його власна швидкість дорівнює 37,2 км/год, а швидкість течії - 1,7 км/год.
Розв'язання.
Швидкість човна за течією річки -
км/год, а проти течії
км/год.
Час руху за течією річки
год.
Час руху проти течії річки
год.
На весь шлях човен витратив
год

Ответы

Автор ответа: alina14tverdokhleb

Ответ:

За течією:93,36 : (37,2 + 1,7) = 2,4(год)

Проти течії: 152,65 : (37,2 - 1,7) =4,3(год)

На весь шлях: 2,4 + 4,3 = 6,7(год)

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