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alisaBacura
alisaBacura
19.12.2022 08:54 •  Математика

Автомобиль в первый день проехал 640 км а во второй день 60% от длины пути пройденного за 1 день сколько километров проехал автомобиль за 2 дня

👇
Ответ:
nastyaasdfg
nastyaasdfg
19.12.2022
640-100%
х60%
640+60

100
х=384(км)во второй день
1)384+640=1024(км)за два дня
4,5(38 оценок)
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Ответ:
ROMMIT2
ROMMIT2
19.12.2022

Пошаговое объяснение:

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4,4(68 оценок)
Ответ:
анна2255
анна2255
19.12.2022

Смотрите.

1) Обозначаем t — сколько времени они шли в первый день, тогда (t-1) — сколько во второй.

2) Теперь следующее соотношение — про 6 километров. Пускай в первый день они км, а во второй день — s2, тогда нам дано:

s1-s2=6.

3) Вспоминая, что расстояние=время*скорость (s=v*t), подставляем в эту формулу вместо s1 и s2:

(3,5*t)-(3*(t-1))=6.

Упрощаем:

3,5t-3t+3=6;

0,5t=3;

t=6.

ответ: Таким образом, в первый день они шли 6 часов. Во второй день — 6-1=5 (часов во второй день — 3*5 = 15 (км)

Пошаговое объяснение:

4,7(15 оценок)
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