Final answer:
The length of the real car is 20 feet.
Step-by-step explanation:
To find the length of the real car, we need to compare the scale ratio of the model car to the actual car. According to the question, the model car is 8 inches long and built with a scale of 2 inches in 5 feet. This means that for every 2 inches in the model car, the real car is 5 feet long. To find the length of the real car, we can set up a proportion:
2 inches / 8 inches = 5 feet / x feet
Cross-multiplying, we get 2x = 40, which means x = 20 feet.
Therefore, the length of the real car is 20 feet (option a).