Предмет: Математика, автор: сопи

Лыжник путешествует со скоростью 18 км / ч и на дороге 3 часа. Если скорость пешехода составляет 9 км / ч, сколько времени требуется, чтобы достичь этого расстояния?

Ответы

Автор ответа: makar8119

Краткая запись:

V1=18 км/ч

T1=3ч

V2=9км/ч

T2=?ч

S1=S2

Решение:

S=V*T

T=S:V

1)18*3=54(км)-S1

2)54:9=6(ч)-T2

Ответ:понадобиться 6 часов

Извеняюсь если есть ошибки

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