Предмет: Алгебра, автор: kamuztaisiya

з двох міст відстань між якими 30 км; одночасно вирушили назустріч один одному два пішоходи і зустрілися через 3 години знайдіть швидкість кожного пішохода якщо відомо що один з них прийшов до зустрічі на 6 км більше ніж інший, решить уравнением, помогите!!!?

Ответы

Автор ответа: Аноним
1

Пусть первый до встречи шел х/км/, второй (30-х)км, тогда скорость первого х/3  км/ч., второго (30-х)/3 км/ч., первый за три часа прошел х км, второй за 3 часа(30-х) км, разница составила 6км

Составим и решим уравнение  х-(30-х)=6

2х=36, откуда х=18,  первый до встречи шел 18 км, его скорость 18/3=6/км/ч/, скорость второго (30-18)/3=4/км/ч/

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