Предмет: Математика, автор: DianaКадырова

как решить задачу от деревни до города 340км. Из деревни в город выехал мотоциклист со скоростью 42 км/ч. Спустя 2ч навстречу ему выехал велосипедист со скоростью 22 км/ч. Через сколько часов они встретятся?

Ответы

Автор ответа: РадугаДэш555
0

1) 42 х 2 = 84 км проехал мотоциклист

2) 340 км - 84 км = 256 км  стало между ними расстояние

3) 22 + 42 = 64 км/ч общая скорость

4 )256 : 64 = через  4 часа они встретятся.



Автор ответа: Грамотность
0
1. Расстояние, которое поехал мотоциклист до того, как выехал велосипедист, =2 ч *42 км/ч = 84 км. 2. Скорость сближения = 42 км/ч + 22 км/ч= 64 км/ч 3. Расстояние, которое они проезжают вместе, равно общее расстояние - то, что один поехал мотоциклист = 340 км - 84 км = 256 км 4. Время встречи= 256 км: 64 км/ч = 3 часа
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