8/3000
4/2500
25×4=100
2/4×4=16
2500×4=10000
16/10000
10000/100=100
16/100=0,16
ответ: 16% или 0,16%
я не сильна в математике
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Пошаговое объяснение:
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а —скорость первого пешехода в км/час
b —скорость второго пешехода в км/час
t —время в пути до встречи (для обоих пешеходов оно одинаковое)))
тогда
до встречи первый часть пути =(a*t) км
до встречи второй часть пути =(b*t) км
после встречи первый оставшуюся ему часть пути за 4 часа
b * t / a = 4 отсюда: t = 4 * a / b
после встречи второй оставшуюся ему часть пути за 9 часов
a * t / b = 9
a*4*a / b² = 9
a / b = 3 / 2
t = 4*3/2 = 2*3 = 6
ответ: первый был в пути 4+6 = 10 часов
второй был в пути 9+6 = 15 часов
6 часов они шли до встречи
Пошаговое объяснение:
Дай лутший
3000___100%
8___x%
x=3,75
Примерно 4%