Question

An alloy is made from $30\%copper,35\%zinc$ and the rest nickel. Find the weight of nickel

in $740g$ of the alloy.

Answer 1

As it is given that An alloy is made from $30\%copper,35\%zinc$ and the rest of nickel

Let us suppose the total percentage is $100\%$

So, Nickel $=100-30-35=35\%$

As we have Total weight of alloy is $740g$

So, the Weight of nickel in $740g$ of alloy here will be $35\%of740g$

$$\begin{gathered} =\frac{35}{100}\times 740 \\ =259g \end{gathered}$$

hence required weight of nickel is $259g$