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To find Pete's CPI (Consumer Price Index) in 2019, we can follow these steps:

1. **Determine the expenditure weights**: The problem states that Pete spends his income as follows:
   - Books and supplies: 10%
   - Tuition: 30%
   - Rent: 30%
   - Food and drink: 10%
   - Transportation: 10%
   - Clothing: 10% (The remaining amount)

2. **Calculate the weighted price index for each item**: Multiply each item's price index in 2019 by its respective expenditure weight.

3. **Sum up the weighted values**: The sum of these values will give Pete's CPI in 2019.

Let's compute this step-by-step:

### Calculation
- Books and supplies: \( 172.6 \times 0.10 \)
- Tuition: \( 169.0 \times 0.30 \)
- Rent: \( 159.0 \times 0.30 \)
- Food and drink: \( 129.8 \times 0.10 \)
- Transportation: \( 115.4 \times 0.10 \)
- Clothing: \( 92.9 \times 0.10 \)

I'll now calculate the sum.Pete's CPI in 2019 is approximately **149.5**.

Would you like further details or have any questions?

### Related Questions
1. What is the purpose of calculating a CPI, and how is it used in economics?
2. How would a change in any item's price index affect Pete's overall CPI?
3. If Pete changes his expenditure pattern, how would the new weights influence his CPI?
4. How does Pete's CPI compare to a general CPI for an average consumer?
5. Can the CPI be used to measure cost-of-living adjustments? If so, how?

**Tip**: CPI is often used to measure inflation by comparing changes in price indices over time.

Pete is a student who spends 10 percent of his income on books and supplies, 30 percent on tuition, 30 percent on rent, 10 percent on food and drink, 10 percent on transportation, and the rest on clothing. The price index for each item was 100 in 2006. The table shows the price indexes in 2019. What is Pete's CPI in 2019?

Learn how to calculate Pete's CPI in 2019 using weighted averages of price indices for items like books, tuition, rent, food, transportation, and clothing. This solution involves applying basic mathematical concepts of CPI and expenditure weighting, suitable for high school students in grades 9-12.

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