Предмет: Математика, автор: makev86

Двигаясь со скоростью 85 км/ч,автомобиль доехал от пункта А до пункта В за 2,4 часа.С какой скоростью должен двигаться автомобиль,чтобы преодолеть расстояние 1,7 ч?
Составить пропорцию.

Ответы

Автор ответа: mmb1
0
формула расстояния S=v*t (скорость умножить на время)
S=v*t растояние при скорости и времени одной
S₁=v₁*t₁ расттояние при другой скорости и времени
S=S₁
v*t=v₁*t₁
85 * 2.4 = v₁ * 1.7
v₁ / 85 = 2.4 / 1.7 (пропорция)
v₁ = (85 * 2.4) / 1.7 = 204 / 1.7 = 120 км / час
Ответ 120 км / час
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