Question

An alloy consists of 7 parts of zinc and 33 parts of copper. Find the percentage of copper in the alloy​

Answer 1

Hello, here is the answer:

Percentage of copper =  $\frac{Parts of copper}{Parts of copper+parts of zinc} *100$

=> $\frac{33}{33+7} *100$

=> $\frac{33}{40} *100$

=> $\frac{165}{2}$

=> 82.5

Hope is helps

:)

Answer 2

The alloy consists of 7 parts of Zinc and 33 parts of Copper.

So, the total number of parts=7+33=40

Therefore, the percentage of copper in alloy:

$\frac{33}{40} \times 100\% = 82.5\%$

So, the alloy consists of 82.5%