Question

X:

6. A two-story building measures 21 feet from
the ground. A scale model shows the building
to be 3 inches tall. How many inches would an
84-foot building be in the model?
height:

Answer 1

12 inches

Explanation:

Let be "x" the top inches (in the model) of a eighty four foot building.

According to the information provided in the exercise, we be aware of that the top of a two-story establishing is 21 toes and in the scale model its top is 3 inches.

Knowing this, we can set up the following proportion: 3/21=x/84

The final step is to get to the bottom of for "x" in order to calculate its value.