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For which type of vehicle was there the greatest decrease in road accidents from the 1930s to the 1990s, and was this decrease by greater than or less than 50% of the original figure?

From the bar graph you’ve uploaded, I can analyze the trend in road accidents for various types of vehicles from the 1930s to the 1990s. Let's break this down by vehicle type, focusing on the greatest decrease:

### 1. **Motorcycle:**
   - 1930s: Approximately 25 accidents.
   - 1990s: Approximately 15 accidents.
   - Decrease: \( 25 - 15 = 10 \) accidents.
   - Percentage decrease: \( \frac{10}{25} \times 100 = 40\% \).

### 2. **Sports car:**
   - 1930s: Around 45 accidents.
   - 1990s: Around 25 accidents.
   - Decrease: \( 45 - 25 = 20 \) accidents.
   - Percentage decrease: \( \frac{20}{45} \times 100 \approx 44.4\% \).

### 3. **SUV:**
   - 1930s: Very low, close to 5 accidents.
   - 1990s: A similar low value, around 5.
   - Decrease: No significant change.

### 4. **Bus:**
   - 1930s: Around 35 accidents.
   - 1990s: Around 20 accidents.
   - Decrease: \( 35 - 20 = 15 \) accidents.
   - Percentage decrease: \( \frac{15}{35} \times 100 \approx 42.9\% \).

### **Conclusion:**
   The **sports car** had the greatest decrease in road accidents from the 1930s to the 1990s with a drop of 20 accidents. This decrease was approximately **44.4%**, which is **less than 50%** of the original figure.

Would you like more details or have any other questions?

### Related Questions:
1. What was the overall trend in total road accidents from the 1930s to the 1990s?
2. Which decade had the highest number of total road accidents across all vehicle types?
3. How does the change in bus accidents compare to motorcycle accidents across the decades?
4. Did any vehicle type see an increase in road accidents from the 1930s to the 1990s?
5. What factors might contribute to the significant decrease in sports car accidents over the years?

### Tip:
When analyzing trends in historical data, look at both absolute numbers and percentage changes for better insight into the scale of changes.

This analysis compares road accidents for different vehicles from the 1930s to the 1990s, focusing on which vehicle type experienced the greatest decrease. The sports car had the largest drop in accidents, decreasing by approximately 44.4%, which is less than 50%. Suitable for Grades 6-8 students, it covers concepts like percentage change and subtraction.

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