Предмет: Математика, автор: durcina

решить задачу собственная скорость моторной лодки 12,6 км/ч скорость течения реки 1,8 км/ч. Сначала лодка плыла 0.5ч против течения, а затем 2,5ч по озеру,.. К путь проплыла лодка за всё это время?

Ответы

Автор ответа: madenesty
1
Скорость лодки, когда она плыла против течения = 12.6-1.8=10.8 км/ч
Путь, который лодка прошла по реке = 10.8*0.5=5.4 км
Путь, который лодка прошла по озеру = 2.5*12.6=31.5 км
Складываем два пути = 36.9 км
Ответ: 36.9км
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