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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