Question

160 lb of an alloy contains 76.8 lb of copper, what percent of the alloy is copper?​

Answer 1

Explanation:

alloy mass is 160lb and amount of copper is 76.8lb

% of copper=(amount of copper in alloy/amount of alloy)*100.

% of copper= (76.8lb/160lb)*100= 48%

Answer 2

48%

Explanation:

To find the percent of the alloy that is copper, we need to calculate the ratio of the weight of copper to the weight of the alloy, and then multiply by 100.

1. The weight of the alloy is 160 lb.

2. The weight of copper in the alloy is 76.8 lb.

3. To calculate the percent of copper in the alloy, we divide the weight of copper by the weight of the alloy and multiply by 100.

4. Percent of copper = (weight of copper / weight of alloy) * 100.

5. Substituting the given values, we have (76.8 lb / 160 lb) * 100.

6. Simplifying the calculation, we get (0.48) * 100 = 48.

Therefore, the percent of the alloy that is copper is 48%.