K& B toy company

$\backslash$table$[[,,$Year $1,,$Year $2,,$Year $3],[$Sales$,$$$,\frac{?}{\text{b}\text{a}\text{r}}(100,000),$$$,120,000,$$$,90,000],[$COGS$,$$$,50,000,$$$,60,000,$$$,40,000],[$Gross$,$$$,50,000,$$$,60,000,$$$,50,000],[$Operating income,$$,15,000,$$$,18,000,$$$,10,000],[$Net income,$$,5,000,$$$,10,000,$$$,9,000]]$

For the following questions, calculate the answer showing the work. Then briefly tell me what seems to be occurring.

$10$

What is the Gross margin for all three years?

$11$

What is the operating margin for all three years?