Answer:
To solve this problem, you need to follow these steps:
1. **Understand the Ratio:**
Identify the parts of the alloy in terms of the given ratio. In this case, the ratio is 5:4:1 for copper, zinc, and tin, respectively. This means that for every 5 parts of copper, you have 4 parts of zinc and 1 part of tin.
2. **Calculate the Total Parts:**
Add up the parts of the ratio to find the total parts. In this case, 5 (copper) + 4 (zinc) + 1 (tin) equals 10 parts in total.
3. **Determine the Amount of Copper:**
Calculate the amount of copper needed for 10 tonnes of the alloy by finding the fraction of the total ratio that represents copper. In this case, since copper is 5 parts out of 10, you can calculate the amount of copper as (5/10) * 10 tonnes.
4. **Perform the Calculation:**
Carry out the calculation to determine the amount of copper required to make 10 tonnes of the alloy.
Remember not to reveal the final answer until you've gone through these steps!