Предмет: Математика, автор: ivankuznecovlv

Грибник, выйдя из леса, направился к деревне. Он шел со скоростью 4 км/ч. Если бы он шел со скоростью 5 км/ч, то затратил бы на дорогу на 1/4 ч меньше. Какое расстояние прошел грибник от леса до деревни?

Ответы

Автор ответа: Jasti228

1

Відповідь:

Х/4 - 1/4 = Х/5

( Х-1)/4 = Х/5

5(Х-1)=4Х

5Х-5 =4Х

Х=5 (км) -расстояние от леса до деревни.

Автор ответа: Krifot

0

Ответ:

t = d/4

t - 1/4 = d/5

d = 4t

d = 5(t - 1/4)

4t = 5(t - 1/4)

4t = 5t - 5/4

1t = 5/4

t = 1.25 ч

d = 4t = 4 * 1.25 = 5 км

Пошаговое объяснение:

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