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Моторная лодка прошла по течению 3 ч. и против течения 4 ч. Скорость течения реки 2км/ч. Определите скорость лодки в стоячей воде, если за всё путешествие лодка прошла 47 км.
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Предмет:
Математика -
Автор:
schaefer - 6 лет назад
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Ответы 1
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х собственная скорость лодки(х+2) скорость по течению(х-2) скорость против течения3(х+2) +4(х-2)= 473х+6+4х-8=477х-2=477х= 49х=7ответ: 7 Км/час
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Автор:
sharon97 - 6 лет назад
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0
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