An alloy of nickel, copper and nickel contains 7.5 kg of nickel, 5 kg of copper and 2.5 kg of nickel.

An alloy of nickel, copper and nickel contains 7.5 kg of nickel, 5 kg of copper and 2.5 kg of nickel. In what proportion are nickel, copper and nickel taken?

1. From the conditions of this problem, it can be seen that the alloy has 3 constituent components: nickel, copper and nickel, and nickel 7.5 kg., Copper 5 kg., Nickel 2.5 kg., So the total weight of the alloy is 7.5 + 5 + 2.5 = 15 kg …
2. Thus, the ratio of the weights of all components is 7.5 / 5 / 2.5. Reducing the common denominator of 2.5, we get that nickel, copper and nickel are taken in a ratio of 3: 2: 1.