Question

The height of each window

is 18 inches, and the width is 11 inches. If the height of the building is 126 feet, what is the width of
the building?

Answer 1

66 ft

Explanation:

What your doing is setting up a proportion that of the windows(18x11) dimensions and the buildings(108xW) dimensions.

So it would be 18/11=108/x

you would cross multiply so you would have 11x108 (1188)= 18x

Divide by 18 so x=66

Answer 2

66 ft

Explanation:

It is given that the windows on a building are proportional to size of the building.

Height of each window = 18 in

Width of each window = 11 in

Height of the building = 108 ft

Let the width of the building be x.

Since windows on a building are proportional to size of the building, therefore

On cross multiplication we get

Divide both sides by 18.