Предмет: Математика, автор: arynbaibossyn

7 Реши задачи. а) С автостанции одновременно отошли в противоположных направлениях автобус и такси. Скорость такси - 90 км/час, а скорость автобуса - в 2 раза меньше. Через сколько часов расстояние между ними составит 540 км? 6) Из гаража одновременно в одном направлении вышли две автомашины. Одна шла со скоростью 80 км/час, а другая - со скоростью 65 км/час. На каком расстоянии друг от друга будут эти машины через 3 часа?​

Ответы

Автор ответа: iramazurk
0

Ответ:

Пошаговое объяснение:

№1

1) 90 : 2 = 45 (км/ч) - скорость автобуса

2) 90 + 45 = 135 (км/ч) - скорость удаления автобуса и такси

3) 540 : 135 = 4 (часа) - время через которое между ними будет 540 км


№2

1) 80 - 60 = 20 (км/ч) - скорость сближения при движении в догонку

2) 20 * 3 = 60 (км) - расстояние между машинами через 3 часа

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