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Катер Ивана Петровича называется "Маруся". Сколько км прошел на своём катере Иван Петрович, если он сначала прошёл 2 часа по течению реки Луга, а потом 4 часа против течения этой реки?
Катер Маруся - 17 км/ч
Река Луга - 2 км/ч-
Предмет:
Математика -
Автор:
raimundofrrw - 5 лет назад
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Ответы 1
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1) 17+2=19(км/ч) -скорость катера по течению2) 17-2=15(км/ч) - скорость катера против течения3) 2*19+4*15=98(км) - всего
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Автор:
ariellabray - 5 лет назад
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