Question

A parking garage has 7 levels below ground. Each level is the same height. Consider ground level to be 0. The depth of the seventh level of the parking garage is −149.8 ft. What is the depth of the first level of the parking garage? Enter your answer in the box.

a) -21.4 ft
b) -19.2 ft
c) -17 ft
d) -15.8 ft

Answer 1

To find the depth of the first level of the parking garage, divide the total depth of -149.8 ft by the 7 levels, resulting in -21.4 ft. Thus, option a) -21.4 ft is the correct answer.

Step-by-step explanation:

The question asks to calculate the depth of the first level of a parking garage with 7 levels, given that the seventh level is at -149.8 ft. Each level is the same height, so we divide the total depth by the number of levels to find the depth per level.

Depth of the seventh level: -149.8 ft
Number of levels: 7
Depth per level: 149.8 ft / 7 levels = 21.4 ft per level

Therefore, since the ground level is considered to be 0, the depth of the first level is one level down, which makes it:

Depth of the first level: -21.4 ft

The correct answer is a) -21.4 ft.