Question: 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.