Question

From 1972 to 1985, the percent increase in the number of registered cars was most nearly

• A. 60%
• B. 50%
• C. 45%
• D. 35%
• E. 15%

Hint:

If a question on a standardized test seems to have a typo or refers to an ambiguous point on a graph, look for a nearby, clearly-defined point (like a labeled minimum or a gridline intersection). Often, using that clear point will lead you to one of the intended answers.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
This question asks for the percent increase in the number of registered cars (solid line) between two specific years. There appears to be a typo in the question, as the low point of the dip is at 1975, not 1972. Assuming the question meant to ask for the increase from the low point in 1975 to 1985 allows for a clear calculation that matches an answer choice.
Step 2: Key Formula or Approach:
The formula for percent increase is: \[ \text{Percent Increase} = \left( \frac{\text{New Value} - \text{Old Value}}{\text{Old Value}} \right) \times 100% \] Step 3: Detailed Explanation:
- Old Value (1975): Reading from the solid line at the 1975 mark, the number of registered cars is exactly on the line for 30 million. - New Value (1985): The graph has a specific data label for this point: 43.1 million. - Calculate the percent increase: \[ \text{Percent Increase} = \left( \frac{43.1 - 30}{30} \right) \times 100% \] \[ = \left( \frac{13.1}{30} \right) \times 100% \] \[ \approx 0.4367 \times 100% = 43.67% \] - This result of 43.67% is "most nearly" 45%.
Step 4: Final Answer:
Assuming the question intended to measure the growth from the 1975 low point, the percent increase to 1985 is approximately 44%, which is closest to 45%.