Предмет: Математика, автор: VVik

Два поезда одновременно отошли от станции. Через 45 мин. каждый их них сделал остановку. На сколько скорость одного поезда больше скорости другого, если один поезд прошел от станции до остановки 51км., а другой 48км??

Ответы

Автор ответа: Аноним

3 км=45 мин

х км=60мин

х=60*3:45=4(км/ч)-разница в скорости

Автор ответа: pyffik

45 мин : 60мин=0.75 часа.

1)51 :0.75 =68 (км/ч) скорость первого

2) 48 : 0.75 =64 (км/ч) скорость второго

3)68 - 64=4 (км/ч) скорость первого поезда больше второго.

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