https://file.aiquickdraw.com/mathbot/file/17278788352701qwgzp26.jpg

To solve the problem of adjusting the pie chart to reflect the correct revenue percentages for each business unit, let's break down the given information:

1. **Europe**: $450,000.
2. **Asia-Pacific**: 80% of the revenue of Europe.
   - $ \text{Asia-Pacific Revenue} = 0.8 \times 450,000 = 360,000 $
3. **Americas**: Half the revenue of Asia-Pacific.
   - $ \text{Americas Revenue} = 0.5 \times 360,000 = 180,000 $
4. **Africa**: Ratio of 9:5 with Europe. This means Africa's revenue is $\frac{9}{5}$ of Europe's revenue.
   - $ \text{Africa Revenue} = \frac{9}{5} \times 450,000 = 810,000 $

### Total Revenue Calculation:
\[
\text{Total Revenue} = 450,000 (\text{Europe}) + 360,000 (\text{Asia-Pacific}) + 180,000 (\text{Americas}) + 810,000 (\text{Africa}) = 1,800,000
\]

### Percentage Breakdown:
- **Europe**: $ \frac{450,000}{1,800,000} \times 100 = 25\% $
- **Asia-Pacific**: $ \frac{360,000}{1,800,000} \times 100 = 20\% $
- **Americas**: $ \frac{180,000}{1,800,000} \times 100 = 10\% $
- **Africa**: $ \frac{810,000}{1,800,000} \times 100 = 45\% $

### Adjusting the Pie Chart:
- **Europe** should take 25% of the pie.
- **Asia-Pacific** should take 20%.
- **Americas** should take 10%.
- **Africa** should take 45%.

Would you like more details on how these percentages were calculated, or have any other questions?

### 5 Related Questions:
1. What does the ratio of 9:5 signify in the context of business units?
2. How would the total revenue change if Europe's revenue increased by 10%?
3. What would happen to the percentages if Africa's revenue doubled?
4. How can ratios between business units help in strategic planning?
5. How do changes in one region's revenue impact the overall percentage distribution?

### Tip:
When working with ratios, always express them as fractions to simplify calculations. This is especially useful when comparing revenues in business contexts.

Adjust the pie chart to represent the percentage of total revenue accounted for by each business unit.

Learn how to adjust a pie chart to accurately reflect the revenue percentages for different business units, using ratios and percentages. This problem includes revenue data for Europe, Asia-Pacific, Americas, and Africa, with a total revenue of $1,800,000. Suitable for students in Grades 8-10.

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