Ina certain chemicl reaction, the ratio of zinc to copper is 4 to 19. A jar of the chemical contains 950 grams of copper. How many grams of zinc does it contain

The jar has 200 grams of zinc.

Solution:

Given that, In a certain chemical reaction, the ratio of zinc to copper is 4 to 19.

A jar of the chemical contains 950 grams of copper.

We have to find how many grams of zinc does it contain

Now, we know that,

19 grams of copper ⇒ 4 grams of zinc

Then, 950 grams of copper ⇒ "n" grams of zinc

So, by chris cross method n x 19 = 4 x 950

19n = 4 x 950

19n = 3800

n = 200

Hence, the jar has 200 grams of zinc.