Question

In a certain​ chemical, the ratio of zinc to copper is 4 to 17 . A jar of the chemical contains 663 of copper. How many grams of zinc does it​ contain?

Answer 1

Answer:

The jar contains 156 grams of zinc

Step-by-step explanation:

Ratios

Let's call

Z=gr of zinc

C=gr of copper

We know the ratio between them in a certain chemical is:

$\displaystyle \frac{Z}{C}=\frac{4}{17}$

The jar of the chemical contains C=663 gr of copper. Calculate the grams of zinc by solving the above relation for Z:

Multiplying by C:

$\displaystyle Z=\frac{4}{17}\cdot C$

Substituting the value of C:

$\displaystyle Z=\frac{4}{17}\cdot 663$

Z=156 gr

The jar contains 156 grams of zinc