March 2022 1 16 Report

Чтобы получить 120 кг мельхиора, нужно сплавить 18 кг никеля, 24 кг цинка, а остальное медь. Сколько кг каждого металла нужно взять, чтобы получить 164 кг мельхиора? ( 6кл. тема : Пропорции).

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