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Моторная лодка за одно и тоже время может проплыть 36км по течению реки и 20 против течения. найдите скорость лодки против течения,если скорость лодки по течению реки на 4 км/ч больше скорости против течения реки
Ответы 1
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x-скорость катераy-скорость рекиt-время ездыx+y-x+y=4y=2x+2=36/tx-2=20/t4=16/tt=4x=7В:скорость корабля проти речки равно 5 км/чач
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Автор:
brielled00g - 4 года назад
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