The alloy consists of copper, aluminum and nickel, taken in a ratio of 5: 2: 1.

The alloy consists of copper, aluminum and nickel, taken in a ratio of 5: 2: 1. Determine how much you need to take each of these substances to get 426.4 kg of alloy. For an alloy, you need to take: kg of copper, -? kg of aluminum, -? kg of nickel. -?

Let’s define a kilogram of alloy is one part in relation to copper, aluminum and nickel.

426.4 / (5 + 2 + 1) = 426.4 / 8 = 53.3 kilograms.

Answer: For the alloy, you need to take copper 53.3 * 5 = 266.5 kilograms, aluminum 53.3 * 2 = 106.6 kilograms, nickel 53.3 * 1 = 53.3 kilograms.