Предмет: Математика, автор: Клешэр

катер проплыл по течению реки за 2,4 часа расстояние 55.2 километров.скорость течения реки 2,5 километров час Найдите собственную скорость катера

Ответы

Автор ответа: Apostol321

(x+2.5)*2.4 = 55.2
2.4x + 6 = 55.2
2.4x = 49.2
x = 20.5 - собственная скорость катера

Автор ответа: ВоздушнаяZефирка

1. 55,2:2,4=23(км/ч) скорость по течению
2. 23-2,5=20,5 (км/ч)-собственная скорость катера

Ответ: 20,5 км/ч собственная скорость катера.

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