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

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. One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.