Предмет: Математика, автор: aminovhusan

расстояние между двумя автомобилями 560 км они одновременно выехали навстречу друг другу и через 3 часа им осталось проехать до встречи 140 км Скорость одного автомобиля превышает скорость другого на 50 км ч Сколько километров проехал автомобиль быстрее другого.
кто ответит ?​

Ответы

Автор ответа: ildar502020
2

Ответ:   135 км.  285 км.

Пошаговое объяснение:

Решение.

Пусть скорость одного равна х км/час. Тогда

скорость второго равна х+50 км/час.

Найдем скорость сближения:

х+х+50 = 2х+50 км/час.

За время 3 часа они проехали 560-140 = 420 км.

S=vt;  420 = 3*(2x+50);

6x+150 = 420;

6x=420-150;

6x= 270;

x= 45 км/час - скорость первого  автомобиля.

45+50=95 км/час - скорость второго автомобиля.

За 3 часа первый автомобиль проехал

S1 = 45*3=135 км.

За 3 часа второй автомобиль проехал

S2=95*3 = 285 км.


aminovhusan: Спасибо
aminovhusan: досвиданья
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