GDP rises from $4 trillion in 2006, the base year, to $5 trillion in 2012. The GDP deflator in 2012 is 120. Find real GDP in 2012. Find the percentage increase in real GDP between 2006 and 2012.

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To find the real GDP in 2012, we need to adjust the nominal GDP of $5 trillion by the GDP deflator.

First, let's calculate the growth rate of the GDP deflator from 2006 to 2012.

The formula to calculate the growth rate is:

Growth rate = (Current year - Base year) / Base year * 100%

So, for the GDP deflator:

Growth rate = (120 - 100) / 100 * 100%
= 20%

This means that the price level has increased by 20% from 2006 to 2012.

To get the real GDP in 2012, we need to divide the nominal GDP in 2012 by the GDP deflator:

Real GDP in 2012 = Nominal GDP in 2012 / GDP deflator in 2012

Real GDP in 2012 = $5 trillion / 1.20
= $4.17 trillion

So, the real GDP in 2012 is approximately $4.17 trillion.

To find the percentage increase in real GDP between 2006 and 2012, we can use the following formula:

Percentage increase = (Final value - Initial value) / Initial value * 100%

Using the formula:

Percentage increase = ($4.17 trillion - $4 trillion) / $4 trillion * 100%
= $0.17 trillion / $4 trillion * 100%
= 0.0425 * 100%
= 4.25%

Therefore, the percentage increase in real GDP between 2006 and 2012 is approximately 4.25%.