# The lead-copper alloy contains 52 kg of lead and 13 kg of copper. In what relation are lead and copper taken?

July 28, 2021 | education

| Let’s determine the ratio of copper and lead in the alloy.

Let us determine how many times the mass of lead is greater than the mass of copper in the alloy:

52: 13 = 4.

The mass of copper in the alloy is 4 times greater than the mass of lead.

Therefore, the metals are taken in a ratio of 1: 4.

No. 2 – the second way.

Let’s find the mass of the alloy: 13 kg + 52 kg = 65 kg.

Let us find the ratio of metals in the alloy, dividing the mass of each of them by the mass of the alloy:

W (Cu): W (Pb) = (13: 65): (52: 65) = 0.2: 0.8 = 1: 4.

Answer: metals are taken in a ratio of 1: 4.

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