Предмет: Математика, автор: evelinasumajlova3

Расстоение между городами 156 км. Из них на встречу друг другу ехали два велосепидиста. Один проежует в час 13,6 км, а второй 4 км. Через сколько часов они встретятся?

Ответы

Автор ответа: fenix6810

Ответ:

Пошаговое объяснение:найдем скорость сближения велосипедистов

13,6+4=17,6

найдем время до встречи

156/17,6=8,9 ч

Автор ответа: NataMon

Ответ:

через 8 19/22 часа или 8 час 52 мин они встретятся

Пошаговое объяснение:

S = 156 км

V₁ = 13,6 км/ч V₂ = 4 км/ч

t = S/(V₁ + V₂)

1. V₁ + V₂ = 13,6 + 4 = 17,6 (км/ч) - скорость сближения двух велосипедистов

2. t = 156/17,6 = 8 19/22 (час) - через 8 19/22 или 8 час 52 мин они встретятся

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Mayflower
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