Select the correct answer.
The height of each story of an office building is 9 3/4
 feet. The height is measured from the ceiling to the floor. The building has three underground levels for parking. A car is parked two levels below ground. At what elevation are the car’s tires relative to the ground level? Assume the ground level is at zero feet.
 A. -19 1/2 feet
 B.  -12 feet
 C. 8 feet
 D.  19 1/2 feet

Given that each story of the office building is 9 3/4 feet in height and the building has three underground levels, we need to determine the elevation of a car parked two levels below ground.

First, let's convert 9 3/4 feet to an improper fraction for easier calculations:
\[ 9 \frac{3}{4} = \frac{9 \times 4 + 3}{4} = \frac{36 + 3}{4} = \frac{39}{4} \text{ feet} \]

Since the car is parked two levels below ground, we need to find the height of these two levels combined:
\[ 2 \times \frac{39}{4} = \frac{78}{4} = 19 \frac{1}{2} \text{ feet} \]

Since the car is parked below ground, the elevation relative to the ground level (which is 0 feet) will be negative:
\[ -19 \frac{1}{2} \text{ feet} \]

So, the correct answer is:
\[ A. -19 \frac{1}{2} \text{ feet} \]

Would you like further details or have any questions?

Here are 5 questions you might ask next:
1. How do you convert mixed numbers to improper fractions?
2. How do you multiply fractions?
3. How do you convert an improper fraction back to a mixed number?
4. What are some common mistakes to avoid when working with negative elevations?
5. How do you calculate the total height for multiple levels?

Tip: Always double-check your calculations to ensure accuracy, especially when working with fractions and negative numbers.

Learn how to determine the elevation of a car parked two levels below ground in an office building with 9 3/4 feet per story. This problem covers fraction arithmetic and negative numbers. Suitable for students in Grades 6-8.

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