To determine the price level this year, we can use the concept of real wage, which adjusts nominal wages for the price level.
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Real wage last year:
- Nominal wage last year = $10
- Price level last year = 120
- Real wage last year = Nominal wage / (Price level / 100)
- Real wage last year = $10 / (120 / 100) = $10 / 1.2 = $8.33
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Real wage this year:
- Nominal wage this year = $11
- Let the price level this year be \( P \).
- Real wage this year = $11 / (P / 100)
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Setting the real wages equal to find the price level:
- We want the real wage this year to be equal to the real wage last year: \[ \frac{11}{P / 100} = 8.33 \]
Rearranging gives: \[ 11 = 8.33 \cdot \frac{P}{100} \] \[ P = \frac{11 \cdot 100}{8.33} \] \[ P \approx \frac{1100}{8.33} \approx 132 \]
So, the price level this year must be approximately 132.
Thus, the correct answer is d. 132.