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There is a subpopulation in Latvia that has 5,000 people. Each family of four in this subpopulation spends the amounts on each food group given in the table in total each month. What percentage of this subpopulation's total expenditure on rice (if summed up across all households) is spent on a single individual on average per month?



To solve this problem, we'll follow these steps:

1. **Extract the Expenditure on Rice for Latvia**:  
   From the bar chart, we estimate the expenditure on rice in Latvia.

2. **Calculate the Total Expenditure on Rice for the Subpopulation**:  
   Multiply the expenditure per family by the total number of families in the subpopulation.

3. **Determine the Expenditure on Rice per Individual**:  
   Calculate the average monthly expenditure on rice per individual in the subpopulation.

4. **Calculate the Percentage**:  
   Finally, we determine the percentage of total rice expenditure that is spent on a single individual.

### Step 1: Extracting the Expenditure on Rice for Latvia

From the chart, it looks like the expenditure on rice in Latvia is around **100 Euros** per family of four.

### Step 2: Calculate the Total Expenditure on Rice for the Subpopulation

Given:
- Subpopulation = 5,000 people
- Each family = 4 people
- Number of families = \( \frac{5000}{4} = 1250 \) families

Total expenditure on rice by all families:
\[
\text{Total expenditure} = 1250 \text{ families} \times 100 \text{ Euros} = 125,000 \text{ Euros}
\]

### Step 3: Determine the Expenditure on Rice per Individual

Since each family of four spends 100 Euros on rice:
- Expenditure per individual:
\[
\text{Expenditure per individual} = \frac{100 \text{ Euros}}{4} = 25 \text{ Euros per month}
\]

### Step 4: Calculate the Percentage

Finally, the percentage of the total expenditure on rice spent by a single individual:
\[
\text{Percentage} = \left(\frac{25 \text{ Euros}}{125,000 \text{ Euros}} \times 100\right) = 0.02\%
\]

### Answer:
The percentage of the subpopulation's total expenditure on rice that is spent on a single individual on average per month is **0.02%**.

Would you like any details or have any questions?

### 5 Related Questions:

1. How does the total expenditure on rice compare with other food groups for this subpopulation?
2. What would be the monthly expenditure if the family size increased to five?
3. How would the percentage change if the number of families doubled?
4. Can this analysis be applied to other countries in the chart? If so, how?
5. How does the expenditure on rice per person compare to the expenditure on meat in Latvia?

### Tip:
When working with charts, always start by accurately interpreting the data and then break down the calculations step by step to ensure accuracy.

Learn how to calculate the percentage of total expenditure on rice for a subpopulation in Latvia. Follow step-by-step calculations to determine the average monthly expenditure on rice per individual and the percentage spent by a single individual. Suitable for Grades 6-8.

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