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Consumer Price Index

Here is a Consumer Price Index and the average annual price of gas for 10 yrs interval.
1990 2000
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CPI 120.7 152.3
Price of Gas (A$) 0.99 1.40

What is the Real price of Gas (R$ in 1990) and also in 2010?
Assume that general inflation and price escalation continued at the same rate for another 10 years. Please, use MS Excel for this.

Solution Summary

What is the Real price of Gas (R$ in 1990) and also in 2010?

$2.19