Предмет: Математика, автор: Чувак54321

Собственная скорость катера 18км/ч скорость течения реки 2км/ч .какое расстояние проплывет
катер за 2 часа по течению реки? За 3 часа против течения реки?

Ответы

Автор ответа: Вредная15
0
Т.к скорость реки по течению 2 км/ч, а скорость катера 18км/ч, значит 
18+2=20км/ч скорость катера по течению реки 
Расстояние=скорость*время; 20км/ч*2ч=40км- проплывет катер за 2ч по течению реки
18-2=16км/ч- скорость катера против течения 
Расстояние=скорость*время; 16км/ч*3ч=48км-проплывет катер за 3ч против течения реки
Ответ: 40км проплывет катер за 2ч по течению реки, 48км проплывет катер за 3ч против течения реки
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