Предмет: Математика, автор: ilya3612

Протягом тижня три кур'єри доставили 638 пакетів. Кількість пакетів, доставлених першим і другим кур'єрами за цей період, відноситься як 4:3 відповідно, а кількість пакетів, доставлених другим і третім кур'єрами, як 2:5 відповідно. Скільки пакетів доставив другий кур'єр? ​

Ответы

Автор ответа: dukuuvolodimir35
54

Відповідь:

Покрокове пояснення:

П:Д=4:3

Д:Т=2:5

Разам 638

Зрівнюємо відношення

П:Д:Т=(4×2):(3×2):(3×5)

П:Д:Т=8:6:15

8+6+15=29

638÷29=22

22×6=132 пакети доставив другий кур'єр

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