Предмет: Математика, автор: 1алина6

Из двух деревень расстояние между которыми 81 км одновременно выехали навстречу друг другу два велосипедиста скорость движения одного велосипедиста 12 километров час а другого на 3 километра в час больше через сколько часов велосипедисты встретятся

MrLyanda: Неужели не решить

MrLyanda: Как находят время если известен путь и скорость?

MrLyanda: путь 81, скорость 12+(12+3)

Ответы

Автор ответа: zarnika

168

1) 12+3=15 - скорость второго
2) 12+15=27 - общая скорость
3) 81:27=3 ч - встретятся

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