Помогите решить задачу. Главное условие - это без использования уравнения. Арифметическим способом.

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01 февр. 2021 г., 10:53:25 (3 года назад)

Пусть х шагов сделал сын, тогда х - 100 шагов сделал отец. 240/х м длина шага сына; 240/(х-100) м - длина шага отца. По условию известно, что шаг отца длиннее шага сына на 20 см = 0,2 метра. Составляем уравнение: 240/(х-100) - 240/х = 0,2 240х - 240(х - 100) = 0,2х(х-100) 0,2х² - 20х = 24000 (разделим обе части на 0,2) получаем: х² - 100х - 120000 = 0 Д = 10000 + 480000 = 490000 х = (100 + 700)/2 = 400 400 шагов сделал сын, 300 шагов слелал отец 240/400 = 0,6 метра длина шага сына 240/300 = 0,8 метра длина шага отца Ответ. 0,6 м и 0,8 м

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22 мая 2021 г., 8:56:15 (2 года назад)

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15 июня 2021 г., 17:28:18 (2 года назад)

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17 июня 2021 г., 22:41:10 (2 года назад)

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