Предмет: Математика, автор: dia3254

Плииииз)
Из Зеленограда и Изумрудного города одновременно навстречу друг другу выехали два автомобиля. Скорость первого больше скорости второго на 20 км/ч. Найдите скорость первого, если известно, что они встретились через 2 часа и расстояние между городами 280 км.

Ответы

Автор ответа: mmalinkat

7

Ответ:

80 км\ч

Пошаговое объяснение:

20 * 2 = 40 км больше проедет первый за 2 часа

( 280 - 40 ) \ 2 = 120 км проедет второй за 2 часа

120 \ 2 = 60 км\ч - скорость второго

60 + 20 = 80 км\ч скорость второго

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