Question

Marisol is painting on a canvas that has an area of 180 square inches. The length of the painting is 11/4 times the width. What are the dimensions of the painting

Answer 1

Notice the picture below, see the length "l"?

well $\bf Area=l\times w\qquad \begin{cases} l=\frac{11}{4}w\\ Area=180 \end{cases}\\\\ -----------------------------\\\\ thus \\\\ 180=\cfrac{11}{4}w\times w$

solve for "w", to find the width,

what's the length?  well, l = 11/4 w