Предмет: Математика, автор: ulyanashchegol

Решите задачу: Туристы проехали 140 км. Первые 3 ч они ехали на лошадях, а оставшиеся 2 ч на автобусе.Найдите скорость автобуса, если она на 40 км/ч больше скорости лошади

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Автор ответа: vervlada

0

Пусть х скорость лошади 3х она проехала. Скорость автобуса(х+40) км/ч 2(х+40) км проехал автобус........ 3Х+2(Х+40)=140 3Х+2Х+80=140 5Х=60 Х=12км/ч скорость лошади 12+40=52км/ч скорость автобуса

Автор ответа: ulyanashchegol

0

Спасибо огромное. Очень во время ! <3

Автор ответа: ulyanashchegol

0

А сможете решить уравнение?

Автор ответа: ulyanashchegol

0

|5x-8|*(4х+5,6)=0

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