Предмет: Алгебра, автор: Анастасия52669

2 туриста вышли одновременно из двух городов. Расстояние между которыми 38 км и встретились через 4 ч. С какой скоростью шел каждый турист, если известно, что первый прошел до встречи на 2 км больше второго?

Ответы

Автор ответа: ndusha

38/4=9,5 км/ч -скорость сближения
х-скорость 1го
9,5-х-скорость 2го

(38-2)/2=36/2=18км-прошел 1й
18+2=20км-прошел 2й

18/х=20/(9,5-х)
20х=18(9,5-х)
20х=171-18х
38х=171
х=171/38=4,5км/ч-скорость 1го
9,5-4,5=5км/ч--скорость 2го

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