The alloy weighing 900 g contains 60% copper. Find the mass of copper in this alloy.

The alloy mass is 900 g.

The mass content of copper is 60%.

Let’s determine the mass of copper in the alloy. To do this, you should make a proportion.

900 g of alloy is – 100%.

X g of copper is 60%.

X = 900 * 60/100 = 540 g.

Consequently, the mass of copper in the alloy is 540 grams.

Answer: the mass of copper in the alloy is 540 g.



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