If a bell weighs 1850 kg and is composed of copper and tin in a 25:12 ratio, how much copper is in the bell?

To determine the amount of copper in the bell, you begin by understanding the ratio of copper to tin, which is 25:12. This ratio indicates that out of a total of 37 parts (25 parts copper + 12 parts tin), 25 parts are copper.

First, calculate the total number of parts represented in the bell's weight:

25 (copper) + 12 (tin) = 37 parts

Now, we can find the weight of one part:

1850 kg (total weight) ÷ 37 parts = 50 kg per part

Now, to find the weight of copper, multiply the number of parts that represent copper by the weight of one part:

25 parts (copper) × 50 kg/part = 1250 kg

So, the amount of copper in the bell is 1,250 kg. This shows how the weights are proportioned according to the established ratio, confirming that the calculation aligns correctly with the ratio of materials used in the bell's composition.