The alloy consists of 5 parts of copper and 8 parts of zinc. How many kg of zinc do you need

The alloy consists of 5 parts of copper and 8 parts of zinc. How many kg of zinc do you need to take to get 250 kg of alloy?

1. First, let’s calculate how many parts the alloy consists of. To do this, add 5 parts of copper and 8 parts of zinc:

5 + 8 = 13 (parts).

2. If all 13 parts are 250 kg of alloy, then zinc is 8 parts. Let’s compose and solve the proportion:

13 – 250;

8 – H.

Where from:

X = 250 x 8/13;

X ≈ 153.846 (kg).

Answer: to get 250 kg of alloy, you need to take 153.846 kg of zinc.