Question

An alloy contains 6% of copper. How many kg of alloy will contain
20.4 kg of copper?

Answer 1

340 kg of alloy will contain 20.4 kg of pure copper.

Step-by-step explanation:

Given data

• An alloy contains 6% of copper. It means amount of 6 part is pure copper among 100 part of copper alloy.

• Let amount of alloy = x (kg)

• We can write given data

        6 % of x is 20.4

• Mathematically it can be written as

        $\mathbf{\frac{6}{100}\times x=20.4}$

        $\mathbf{x=\frac{100\times 20.4}{6}}$

• On solving above, we get

        x = 340 kg = This amount of alloy which contains 20.4 kg of pure    

        copper.