Предмет: Математика, автор: Аноним

помогите решить задачу
В разное время из двух городов. расстояние между которыми 940 км. навстречу друг другу вышли два поезда, Скорость одного поезда 52 км/ч , а скорость второго на 8 км/ч больше. Поезда встретились через 7 ч. после выхода второго поезда .Сколько в пути находился первый поезд ?

Ответы

Автор ответа: konstantinstar1

0

52+8=60 км/ч-скорость второго поезда
7*60=420 км - проехал второй поезд до встречи
940-420=520 км-проехал первый поезд до встречи
520:52=10 ч
Ответ: 10 ч находился в пути первый поезд

Автор ответа: Аноним

0

спасибо ты красава

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