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In this problem, we are dealing with sales data from the JAYAPROPERTY agency.

### Key Information:
- **25%** of JAYAPROPERTY's sales are sold at an average price of **Rp. 240,000,000**.
- The remaining 75% are sold at an average price of **Rp. 540,000,000**.
- We need to calculate the total sales for **May** and **June** combined.

### Step-by-Step Solution:

1. **Identify the total number of houses sold by JAYAPROPERTY**:
   - From the bar chart, JAYAPROPERTY sold about **160 houses** in total during May and June.

2. **Calculate the number of houses sold at each price**:
   - **25% of 160 houses** were sold at Rp. 240,000,000: 
     \[
     \frac{25}{100} \times 160 = 40 \text{ houses}.
     \]
   - The remaining **75% of 160 houses** were sold at Rp. 540,000,000:
     \[
     \frac{75}{100} \times 160 = 120 \text{ houses}.
     \]

3. **Calculate the total revenue for each price category**:
   - For the 40 houses sold at Rp. 240,000,000:
     \[
     40 \times 240,000,000 = 9,600,000,000 \text{ (or Rp. 9.6 billion)}.
     \]
   - For the 120 houses sold at Rp. 540,000,000:
     \[
     120 \times 540,000,000 = 64,800,000,000 \text{ (or Rp. 64.8 billion)}.
     \]

4. **Add the total revenue**:
   - Total sales:
     \[
     9,600,000,000 + 64,800,000,000 = 74,400,000,000 \text{ (or Rp. 74.4 billion)}.
     \]

Therefore, the total sales value for JAYAPROPERTY during May and June is **Rp. 74.4 billion**, which is not one of the answer choices listed.

### Answer: **E. Bukan semuanya (None of the above)**.

Would you like more details or have any questions?

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Here are 5 related questions to expand your understanding:

1. How do you calculate the percentage of sales for different categories?
2. How does changing the average price affect total sales?
3. What is the significance of calculating sales for different months?
4. How would the solution change if we had more price categories?
5. What is the importance of visualizing sales data in graphs?

**Tip**: When working with percentage-based problems, always calculate the exact number of units involved before computing the total value.

If 25% of JAYAPROPERTY's sales are at an average price of Rp. 240,000,000 and the rest at Rp. 540,000,000, what is the total value of sales in May and June?

This example calculates the total sales value of JAYAPROPERTY over two months, using percentage distribution of unit sales at two different price points. This problem involves basic concepts of percentage and multiplication suitable for high school students.

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