Предмет: Математика, автор: 127Nana1

Два велосипедиста выехали выехали одновременно на встречу друг другу из двух сёл, расстояние между которым 54 км. Через сколько часов велосипедисты будут друг от друга на расстоянии 27 км, если их скорости 12 кмч и 15 км ч
Помогите пожалуйста!!!

Ответы

Автор ответа: barashm

12+15=27км/ч скорость сближения
(54-27)÷12=1ч
Ответ через 1час велосипедисты будут на расстоянии 27км

Автор ответа: dakosia99

$15t+12t=54-27 \ 27t=27 \ t=1$

то есть через час

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