Question

a 60 kg ingot of brass consists of zinc and copper. 25% of the ingot consists of zinc. how many kilograms of copper does the ingot of brass contain​

Answer 1

Answer: 45kg

Step-by-step explanation:

Since 25% of the ingot consists of zinc, it implies that (100 - 25) = 75% of copper is contained in the ingot.

We then calculate 75% of 60kg to get the amount of kilograms of copper that the ingot of brass contain​. This will be:

= 75% × 60

= 75/100 × 60

= 0.75 × 60

= 45kg